Duality-Cool, Now Coming in Hot. The B1B All Play Socks Adds a Twist to Crew-Length Socks with Two Different Colors in Every Pair. Made of a Cotton-Poly Blend with a Touch of Stretch, Each Duo Has Its Own Personality and Bold Logo Treatment on the Calf. These Durable, Comfortable Stand-Outs Let you Push your Limits Every Day Starting From the Feet Up.