Its the ultimate performance sock from Callaway Golf, featuring Opti-Dry technology for a fresh feel throughout your round. Made from a superior blend of Polyseter and Spandex, the Tour Opti-Dry Low II Socks combine 360 arch support with an engineered heel and cushioned foot for superb walking comfort. They also incorperate a series of mesh pannels in various places as well as conforming stretch around the cuff for optimal levels of ventilation, support and comfort.