Triple 8 Undercover Snow Knee Pads, Black Form-fitting neoprene sleeve with EVA contoured foam padding S 12.5 - 14.5 in (32 - 36 cm), M 14.5 - 16 in (36 - 40 cm), L 16 - 17 in (40 - 44 cm) Padding for sides of knees, Easily fits under any first layer or shell Easily fits under any first layer or shell Velcro straps provide a secure and custom fit