You don't climb a rope 10 times to get better at climbing a rope. You climb it because you want to be better you. Stay fearless and confident with new sandpaper-textured material built with Kevlar® fiber and RopePro+ technology in Reebok CrossFit Nano update. The re-engineered anatomical shape helps you get to that next level. Upper infused with Kevlar® helps provide durability. Re-engineered anatomical design for a natural and secure fit. Compression-molded midsole for cushion and shock absorption. DuraGrip layer for durable toe protection. Raised outside lug pattern on outsole for greater traction. 4mm heel-to-toe drop for a stable platform. Kevlar®, registered trademark of DuPont used under license. Color: Black / Reebok Rubber Gum / White / Pure Silver.