Reebok has taken their functional fitness shoe to the next level with the Reebok CrossFit Nano 6.0. This update combines the high-end Kevlar® from the previous model with a fresh sand-paper style material and along the instep for added traction during rope climbs. The wider fit of the NanoFrame helps ensure athletes move naturally and comfortably from Olympic lifts to running and jumping. CrossFit requires facing tough challenges, many of which are unknown, and Reebok has designed the best tool for athletes to be ready for anything.Upper: DuPont™ Kevlar® infused mesh provides airflow and extreme durability. RopePro carbon rubber wrap is forged with an increased grip pattern providing improved grip during rope climbs while protecting the shoe from shredding. NanoFrame provides wider toe box and facilitates more natural movement. Midsole: CMEVA compression molded foam underfoot offers better cushioning and shock absorption. An anatomical toe to heel construction and footbed provides a natural and secure fit. Polyurethane NanoShell gives an extra defense against midsole abrasion, enhanced stability and support for the foot during heavy lifts. Removable insole. Outsole: Raised outsole lug patterns deliver better surface area contact and improved traction.