Abrasion protection wasn't enough for ION's approach to functional and smart protective gear. That's why they amped up the K-Sleeve. The Sleeve construction offers a compressed fit to make sure everything stays in place while biking. For added light-impact (EN 1621 , Level 1) protection ION uses a 3D-shaped protection pad. The pre-shaped form and strategic cuttings of the pad enable it to fit the natural posture of your knee and make sure that the pad can follow those movements. In case of a crash, a non-sewn layer on top of the sleeve makes sure that you get a bit of sliding ability, preventing the pad from riding up in contact with the ground.