St.Patrick's Day Performance Crew Sock - Beer, shamrocks and confetti 6% rubber One Pair of St.Patrick's Day Performance Crew Socks 60% Polyester / 25% Polypropylene / 10% Spandex / 6% Rubber - Antimicrobial - Moisture wicking Arch support and air vents for comfort and breathability Available in sizes Small, Medium, Large, and XLarge (see sizing instructions below) More designs available