Sportful Sottozero Long Sleeve winter base layer review

The right base layer sets the stage for performance, does the Sottozero have what it takes?

Sportful Sottozero Long Sleeve Winter Base Layer
(Image: © Josh Ross)

Cyclingnews Verdict

The Sportful Sottozero winter base layer isn’t the warmest option on the market and it won’t be for everyone. If you are someone who needs warmth but also builds up a sweat when climbing, this base layer is worth checking out.


  • +

    Eight per cent wool content

  • +

    Special high-wicking panels for breathability

  • +

    Great shoulder mobility


  • -

    Very tight neck to get your head through

  • -

    Torso is longer than it needs to be

You can trust Cyclingnews Our experts spend countless hours testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

The base layer is the piece of clothing that sets the stage for your best performance on a bike. Like a true domestique, the best cycling base layers work hard whilst almost never being noticed and rarely discussed but that doesn't mean it's any less important. They are an integral part of getting your clothing just right but despite this, they're rarely given as much thought as the outer garments like jerseys, jackets, tights or gloves. 

The Sportful Sottozero is the warmest option Sportful offers if you don't need a wind block layer. This exact option hasn't yet made it to our list of the best cycling base layers, but I've been testing it to see whether it warrants inclusion. 

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Josh Ross

Josh hails from the Pacific Northwest of the United States but would prefer riding through the desert than the rain. He will happily talk for hours about the minutiae of cycling tech but also has an understanding that most people just want things to work. He is a road cyclist at heart and doesn't care much if those roads are paved, dirt, or digital. Although he rarely races, if you ask him to ride from sunrise to sunset the answer will be yes. Height: 5'9" Weight: 140 lb. Rides: Salsa Warbird, Cannondale CAAD9, Enve Melee, Look 795 Blade RS, Priority Continuum Onyx