The challenge to making a great pair of knee guards is to build them in such a way that they are comfortable to pedal in. After all, they cant protect you if theyre around your ankles. The Summit knee guards provide CE-certified protection that you can comfortably ride in all day, thanks to an innovative low-profile D3O pad. We used lightweight 4-way stretch Cordura fabric on the impact zones with breathable mesh back panels for comfort. These guards are the perfect choice for trail riders who want a bit more protection, but dont want to slow down.