Reebok Crossfit Nano 9 Women's Training Shoes Black/Red/Yellow : With the input of CrossFit athletes all over the country, the Reebok Nano 9 has been re-tooled for a fresh look and fine-tuned for even more superior performance. This new model features a brand new logo and technical elements like a Flexweave upper and a softer rubber midsole. Upper: Features updated Flexweave technology on the upper with fibers woven into a figure-8 for a strong, flexible fit. A bootie construction provides ultimate performance comfort. Midsole: An all new softer rubber midsole protection wrap provides security. Cushioning in the forefoot was added for running and improved overall comfort. Outsole: High-abrasion rubber outsole with an improved grip pattern for traction and durability. Forefoot flex grooves provide excellent flexibility for the foot.