O'Neal Youth Pro MX Bomber Sox (Graphics, Youth One Size) Knee-high sock height Moisture wicking materials. Thick knit in heel and sole for comfort and shock absorption High density materials for durability. Ribbed arch and ankle for a secure fit One Size; Composition: 80% Acrylic, 15% Polyamide, 5% Spandex Available in: Adult: X-ray, XOXO, Crossbones, Bomber, Victory, Wild, Victory, Woods Camo, , Eagle, USA, Wingman, Islands, Enigma, Hunter Youth: XOXO, X-ray, Bomber