On test: Giro E2 helmet

For mountain bikers only? (Image credit: John Stevenson)

Giro's helmets are very much in the public eye at the moment as the company supplies the Discovery Channel team with Atmos road helmets and the sleek and slippery Advantage time trial lid. Away from the tarmac, Giro's E2 is the company's top model for cross-country mountain bike riding and racing, and since Giro stopped offering a peak on its road helmets it's also the highest-spec model Giro makes with a handy plastic protrusion to keep the elements out of your eyes.