Even though the days are longer and the mercury has risen above freezing, a base layer is still an important bit of kit to keep you dry and comfortable on the bike. The best cycling base layers will wick moisture and make a real difference on the bike.
Short-sleeve cycling base layers can work as part of a layering system under one of the best cycling jerseys and a gilet or a jacket, depending on the season. A base layer provides a foundation for wicking sweat and keeps the wearer comfortable across a range of temperatures.
Last updated on 24th March 2026 Revamped the product selection to keep it current and switched focus from winter to spring/summer cycling base layers. Also rewrote the introduction to reflect the time of year.
Best cycling base layers
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Summer cycling base layers
A good summer cycling base layer will wick away heat and sweat quickly, without adding too much bulk. Thus, allowing good airflow over the body helps you to stay cool and comfortable.
Best overall summer
I've ridden for over 13 hours straight in the Attaquer Summer base layer and it was nothing but comfortable with zero chafing or irritation. I wouldn't hesitate to use it for my longest rides, and it takes the best overall spot for summer cycling base layers, in my opinion.
The Attaquer Summer base layer uses a polyster/elastane mesh mix with wide, stretchy side panels and a hem. It's super comfortable when you pull it on and it's one of the layers I reach for most in summer. Plus, it's one of the most comfortable cycling base layers I've worn.
Sizing is staggered, I've tested the S/M and it's closer to a lot of other brands' small in my opinion. However, the fabric does have a lot of stretch if you're closer to a medium.
You can read our full review of the Attaquer Summer base layer for more details.
Best Merino - Summer
Since overhauling its base layer offerings, Rapha has introduced a new model: the 100% merino wool short-sleeve base layer.
As soon as I pulled it on, I noticed how soft the Merino base is, and it's certainly one of the most comfortable layers in this guide. It has a slightly more relaxed cut, which means you can do a lot with it. Wearing it under a jersey or even on its own for gravel or more relaxed riding.
The slacker cut of the hem fits a little more like a t-shirt, which helps this, and I have even worn it around the house to relax in. I also got back from over two hours on my gravel bike, with it feeling dry and sweat-free and odour-free.
Although it's a summer weight, you could also wear this piece as part of your winter layering strategy, making it even more versatile and useful, and boosting the value for money. Check out the GribGrab Windbreak short-sleeve option in the winter section for a heavier-weight short-sleeve base to wear under a tighter jersey.
Bear in mind that the Rapha layer won't fit as well under a tight-fitting or aero cycling jersey due to the fit and less stretchy merino wool.
You can read our Rapha Merino base layer review for more details.
Best Value - Summer
Constructed from a soft and fine partly recycled polyester mesh, the Endura Translite II base layer is a good value option that's also supremely comfortable. It's available in sleeveless and short-sleeved variants, and there is also a Windstopper version. I, however, tested the short-sleeve version.
Even with a price tag less than half of some of the most expensive options here, the Translite is amongst the most comfortable cycling base layers in this whole guide. It's super soft and comfortable with flatlock seams, and the cut is ever so slightly more relaxed than some of the other, more tightly fitting race cut base layers here. This adds a little bit of versatility, and you could even wear it as a base layer for a walk or run.
It kept me comfortable and wicked sweat well on the smart trainer and riding outdoors, and for the price is a really solid cycling base layer option.
It's only available in white, has a silver Endura logo on the chest, and the label is soft and sewn into the rear of the neck, as you can read in my full Endura Translite II base layer review.
Also Tested - Summer
As the most expensive summer cycling base layer on test, you expect it to get full marks, and for the top-tier layer from Assos, the GTO NS Dermasensor is also one of the best performing.
Using a mesh construction except for the Assos solid line down the front of the chest, the Dermasensor is super soft and form-fitting. There are zero seams or labels apart from some minimal stitching at the shoulders, and it makes for a very comfortable experience and aids layering. The mesh holes themselves are larger than most of the other cycling base layers here and really open up when stretched, which aids cooling.
The grey and black colours sit nicely against the Gold Assos logo, and whilst aesthetics don't really come into play when covering cycling base layers, it does look classy.
I've worn it on hot climbs in Mallorca and on the cobbles of the Paris-Roubaix Challenge, and it's always performed very well. It actually feels medium-weight in thickness but acts like a far lighter-feeling base layer.
Needless to say, I've found the Dermasensor incredibly comfortable and soft to wear, and it's performed excellently across all test rides. If you want to splash the cash for one, it won't disappoint.
Owners also benefit from a two-year warranty and crash replacement policy from Assos.
Seamless base layers are great for comfort, as you've got less stitching to rub against you and cause irritation. The GripGrab Expert Seamless base layer is a seamless base layer that's seriously soft and comfortable, incredibly soft to the touch, even when handling it, and pulling it on feels great.
The tubular body of the piece is seamless; the only seams to be found are on the arms and GripGrab has chosen polypropylene fabric over polyester, which it says is quicker drying and stays fresher. There are also mesh 'vents' under the arms, which are there to aid cooling and deal with sweat.
I found my XS/S piece to fit like a regular small, and the base layer has a good amount of stretch. The comfort on offer is up there with the best in the guide, and it will suit a wide range of uses.
With a temperature use rating of 15/30C - 59/86F, the simply named Pas Normal Sleeveless base layer is a versatile and minimalistic cycling base layer constructed mostly of soft Polyester mesh.
It's super light and airy, so it should wick moisture well and regulate body temperature on really warm days. I've done a lot of riding in this base layer and like its comfort and shorter length. There isn't a lot of it to tuck into shorts, though, and it suits tighter, more aero jerseys very well.
It is, however, available in four colours and has a Pas Normal logo on the front and a large vertical 'Road to Nowhere' lettering down the back. It feels very unobtrusive to wear, almost like a second skin.
There is a newer and slightly more expensive Mechanism base layer from Pas Normal, which I have also tested, but I prefer this one. It's more comfortable in my opinion, and you can save the extra cash for something else.
Pas Normal also provides a 50% discount crash replacement policy in the event of an off as well.
Best winter cycling base layers
In winter, staying warm and dry is paramount if you want to be comfortable through the colder, wetter months. A winter base layer will be thicker than a summer layer and will usually have long arms to help keep in warmth. It still needs to wick sweat away effectively to avoid cold, damp spots.
Best Overall - Winter
Like a lot of Assos cycling kit, there is a special feeling about the LS skin layer, and it takes my best overall winter spot.
In my opinion, the fit and feel are the best of any of the cycling base layers in the guide. It's made from a mix of carbon and polypropylene yarns with some elastane, which is meant to draw moisture away from the skin.
Bar the Spatz and GripGrab offerings, the material is a little thicker than everything here. But it's definitely the softest feeling when you're wearing it, it's stretchy and does feel like something of a second skin. It recently received an update, and the back is now slightly more breathable to help regulate temperature.
The skin layer has a raised neck that is well-shaped and fitted to help keep you warm. Make sure you pay attention and double-check your size against the Assos sizing when buying. I'm a size small in pretty much everything, but this test product is an Assos M.
The Winter Skin layer is a premium base layer that will keep you warm and snug during the winter and on the coldest days. I found it did wick moisture well and kept me really comfy, and I almost looked forward to pulling it on before winter rides. If you want to go for a high-end base layer for a lot of outdoor riding, the Skin layer won't let you down.
You can read my in-depth Assos LS Skin layer review for even more detail.
Best Value - Winter
I tested a few cycling base layers from Van Rysel this winter, but the Racer 2 base layer stood out as my favourite. Sadly, Van Rysel no longer offers the Racer 2 base layer in the maroon colour tested, but you can pick it up in grey or blue.
Van Rysel bikes and equipment are already featured in the WorldTour, so the brand is casting off its budget roots to some degree. I've gotten on well with Decathlon's (the brand's parent company) own brand base layers for years, and this one is no different.
Top tip: make sure you wash it first before using, as the colour ran slightly for me onto a few other garments in the washing basket.
The Racer base layer is a medium-weight option but proved to be incredibly comfortable thanks to its high levels of stretch. The feel is actually along the same lines as the GripGrab Expert and the Assos skin layer for a fraction of the cost. I recently wore it for a few hours in pretty cold and bleak weather, and it was very comfortable.
The base layer also has some light ribbing woven into the inside of the piece to aid warmth and trap air more effectively. It's not as prominent as the Basez Extreme, but it's along the same lines. If you don't want to spend too much on a good quality, winter base layer, you can't go wrong here.
Check out our Van Rysel Racer 2 Long Sleeve base layer review for more details.
Best all rounder - Winter
The Thermowave Merino Xtreme base layer may not be a 'true' cycling-specific base layer, but it's a great all-rounder for winter activities, including climbing and walking.
It uses a Merino (80%) blend mixed with Polyester and Polyamide and is incredibly soft, comfortable, and warm. If you want a capable, luxury base layer to use on the bike under a winter jacket, for walking, or even for lounging in post-ride or wearing indoors, which is what I've been doing a lot of in it, this is going to tick every box for you.
It uses 220 GSM material and a polyester interior lining to ensure there is no 'Merino scratch' when you're wearing it. It isn't a super close fit, so it's better suited to layering up on less intense rides. It's also available in a quarter zip version if this is your preference.
Also Tested - Winter
Another Rapha item on this list that has benefited from the recent revamp of the base layer range is the Thermal Base Layer. Formally the Rapha Pro Team base layer, it is a heavier-weight winter base layer designed to deal with everything winter riding conditions can throw at you. It's also one of the two garments in this guide to utilise Polartec Power Grid fleece.
It is constructed from polyester and elastane and uses Polartec Power Grid fleece material on the inside, which is designed to trap air and is a fabric shared with the MAAP base layer in our test. The cuffs on the ends of the sleeves are doubled over to ensure a comfortable fit at the wrists.
The lengthy neck of the base layer is the standout design feature, allowing you to use it as a warmer right up to the nose on those freezing mornings. Once things warm up, you can then roll it down or just fold it over, and you have an integrated neck warmer. This pretty much eliminates the need for a Buff. Some of the cycling base layers in the guide have longer necks, like Spatz, but none offer quite the same length as the Pro Team does.
The base layer is soft and comfortable and still pretty lightweight. It kept me warm and snug on some very cold days. Though it is at the more expensive end of the spectrum, it will probably pay for itself in the long run if you are doing a lot of winter riding.
Although the Spatz Basez Extreme base layer was released two years ago, it's still a top pick for those who want a really heavy-duty layer for lots of cold, outdoor riding. The Extreme uses differing weaves to create a waffle-like material which is designed to trap more warm air, and theoretically keep the wearer warmer.
A key difference between the older Basez 2 base layer from Spatz and the Basez Extreme is the fit. The Extreme, this one here, is a lot tighter fitting and takes a little effort to pull on. Once in place, its stretchy material means it fits you snugly, and it feels like a second skin once in place. I haven't found it too tight or restrictive anywhere.
It also has an extended neck for extra protection, and there is a windproof panel on the chest. It's thick enough to be into jersey territory, and I like to wear it with just a gilet on top for a cross between warmth and lightweight on the bike when going hard, as well as for longer winter rides under layers and a winter jacket. Despite its heavy hitter billing, it offers great versatility.
Check out our Spatz Basez Extreme base layer review for more details.
The MAAP thermal base layer is a mid-weight piece, but that doesn't stop it from packing a punch in terms of outright warmth. That's because of the Polartec Power Grid fabric, which takes the form of tiny raised squares of fleecy fabric all over the inside of the base layer.
Polartec states this technology strengthens warmth and breathability while reducing fabric mass and also aiding wicking. Sadly, the purple colour I have the base layer in is no longer available, but there are five other colours to choose from.
The thermal base layer is a deceptively warm unit, and I made the mistake of wearing it on a ride where temperatures rose up to around 10 degrees (or 50 degrees Fahrenheit) with a winter jacket, and I ended up being far too warm. The Polartec Power Grid material does an excellent job of creating extra warmth.
Take a look at our in-depth review of the MAAP Thermal base layer for more details.
How to choose the best cycling base layers
- What fit do I want? A cycling base layer should fit snugly against the skin and allow easy layering on top.
- Which sleeve length do I need? Sleeveless layers are ideal for hot weather or under tight jerseys, short sleeves suit warm conditions, and long sleeves offer extra warmth for colder rides.
- What fabric do I want? Do I want lightweight breathability, extra warmth, moisture-wicking or some merino wool content?
- Are cycling base layers unisex? Many are, though some brands offer separate men’s and women’s cuts.
- How much to spend? The differences between value and expensive base layers are often subtle, and lower-priced options can do the job almost as well.
Everything you need to know about the best cycling base layers
The best cycling base layers can be very specific in their design, but you can cover a wide range of temperatures with just a couple of well-chosen options. I have mentioned it above, but the differences between base layers are finer than perhaps something like waterproof jackets. I have pitted base layers against each other for a best-of-the-best list, looking at the finer details.
Start with a thin, lightweight option for warmer temperatures and a heavier-weight long-sleeve base layer for cold weather. By playing around with different clothing layering options, you will learn what temperature ranges the base layers work best in and get a feel for what you prefer.
As a starting point, note the temperature on each ride, what you are wearing and how you feel on the bike. This is especially relevant in winter. You will start to create a memory bank and get better at knowing what to wear to be comfortable in a certain temperature range for the riding you are doing. It's surprising how many cyclists struggle with this. You will get to the point where you can look at the temperature and know exactly what to choose to stay comfortable.
What material is best for a cycling base layer?
Different materials play a big part in how a cycling base layer will perform and the environments in which it will excel. These materials are generally split into two groups: man-made synthetic fabrics or natural materials.
Synthetic fabrics are often used for high-performance cycling base layers, suited to warm weather or indoor training, where sweat management and cooling effects are important. The stretch achieves a close fit to maximise wicking abilities to move sweat away from the body during a hard climb or during an intense Zwift session.
Natural materials such as merino wool don't wick or dry as quickly; however, they allow effective thermoregulation across a wide range of temperatures, making them extremely versatile. When wet, natural fabrics like merino still retain their insulating properties, which makes them perfect for poor weather climates. Natural materials are also more resistant to unpleasant odours from riding, ideal if you are commuting to and from work or doing multi-day rides away from home.
What do the big brands say?
We asked clothing manufacturer Rapha for some advice on how to choose a cycling base layer, after all, there is a lot of choice out there now.
The brand came back to us and said:
"When choosing a summer base layer, riders need to consider the conditions they’ll be riding in at every point of the day. Merino lightweight base layers are great for cooler starts and they can be really effective at improving the versatility of jerseys - many customers ride these throughout the British Summer."
For very hot days, we’d recommend a lightweight sleeveless base layer which will wick sweat away from the body, evaporating to provide a cooling effect. For multi-day events or ultra-distance races, merino is a great option as it’s incredibly good at managing odour as well as being quick-drying (if you’re lucky enough to get to wash it!).
"Last but not least, think about what colour jersey and bib straps you’re wearing, a base layer can be a great way of hiding bib straps or elevating your overall style on the bike."
How do you wear a cycling base layer
Contrary to what you might see in the pictures, the cycling base layer goes under your bib straps. They are designed to be worn next to the skin, and so work best with as much skin contact as possible.
In order to show how long they are, and any features that may have been covered by the straps, I opted to photograph them worn over the bibs.
How should you wash and care for your base layers?
Caring for base layers is generally pretty easy. The majority of options on the market are marked as a 30-degree synthetic was. This means you can just wash your base layers with your regular cycling kit. Don't forget to close any zippers on jerseys or jackets to protect your kit in the wash.
Some merino wool items have more specific washing instructions to help you look after the material; some require wool-specific detergent to look after the item. Check your labels or ask the manufacturer if you're unsure.
Base layers also deal with a lot of sweat. And over time can get a bit stinky. Companies do make base layer and undergarment refresh products for synthetic products that aim to eliminate odours and boost breathability. Nikwax makes a 'Basewash' product if you are interested.
How should a cycling base layer fit?
The best cycling base layers should have a next-to-skin fit to offer maximum performance and should be the first layer next to your skin. Sitting close to the body will allow moisture to be wicked away effectively, and minimise any bunching which may cause discomfort when worn under other layers.
High-performance race-focussed base layers will feature flat-lock stitching, a wide collar to fit beneath skinsuits, and a pre-shaped cut optimised for an aggressive riding position. For longer or relaxed riding, opt for a casual cut, which relies on the material's stretch to provide a close, comfortable fit on and off the bike.
Which length sleeve is best for a cycling base layer?
Most cycling base layers will come in a selection of sleeve options. Generally, short or sleeveless base layers are used for hot or changeable conditions as they will fit comfortably under a regular jersey and can be paired with the best arm warmers or a gilet if temperatures are changeable.
Long sleeves are the reserve of cold weather when you will be wearing other long-sleeve layers all day. Pair with a long-sleeve insulated jersey or jacket to keep your upper body toasty when the mercury drops.
What features make a cycling base layer better?
Some base layers will offer extra features to excel in specific conditions. Super thin mesh material side panels enhance breathability during max efforts in the hottest temperatures.
To be honest, you can get away with a lot in the summer months, but winter is when you will pay if you get things wrong. Top tip, if you're doing a really long ride, carrying a spare base layer can make a lovely change if you stop at a cafe halfway, change your base layer then, and you will instantly feel more comfy.
Wind-proofing, water resistance, a high collar, or even a built-in balaclava hood are all important considerations if you are frequently riding headfirst into winter.
How we test?
Testing is the backbone of the tech department at Cyclingnews and how we test is taken seriously, so read on to find out more.
I inspect every cycling base layer in the guide out of the packet for construction and design features, record and log its weight, and photograph myself wearing each one.
I then put in the hard yards, testing each one out on the bike. I experiment with different layers and cycling kit over a range of different temperatures and conditions, both in and outdoors (this is more specific to the winter cycling base layers). I also test each base layer long-term to see how it washes and wears. I even rode in one for over 300 kilometres!
If you have any further questions on any of these cycling base layers, feel free to shoot me an email, and I'll do my best to answer.
I've been cycling in base layers for over twenty years and testing them for Cyclingnews for two years solid. Whether it's summer or winter, I always have a base layer on. I've tested over 25 winter cycling base layers alone in testing for this guide.
I've tested all the base layers here over extended periods of time and in a range of weather conditions and temperatures and at different riding intensities. I consider that we will all want slightly different things from our cycling kit, so I have done my best to include a wide selection of cycling base layers that should suit most people.
