Help protect those vulnerable elbows from impacts and abrasions. And do it with a cool, light, effective arm sleeve. Easy, comfortable, under the jersey fitment. Four-way stretch Coolmax® fabric for all day riding comfort. Armanox® brand elbow armor is impact tested and CE Certified to EN 1621-1, Level 1. Elbow armor is fully ventilated for comfort. Mesh panel on inside of arm adds ventilation. Silicone grp print reduces slipping. Quick access armor pocket for armor removal when washing. Articulated design for a natural riding position. Two year workmanship and material warranty. Sizing: Size XS - SM fits 10" - 12" biceps and 6" to 7" wrist. Size MD - LG fits 12" - 14" biceps and 7" to 8" wrist. Size XL - 2XL fits 14" - 16" biceps and 8" to 9" wrist.