In 2010, the brand released Reebok Zig, an athletic footwear technology and collection of shoes include zigzag foam soles designed to push athletes forward. The Reebok Nano was released in 2011 and is the first official CrossFit shoe. The company has also partnered up with Les Mills and CrossFit to produce more fitness apparel, footwear, and workouts. Reebok released the Z-Series foam, a combination of dense midsole and outsole so the foam is cushioned but not worn-down. The foam debuted on the ZQuick TR with Reebok's new delta logo in 2014.