Custom Nike Elite Flappy Bird Socks Quality apparel customized since 1996 Fully customized with 99% print coverage on entire sock Dri-Fit Fabric helps wick moisture away from skin Fully cushioned heel and toe for added comfort Size is represented by SHOE size (SMALL:women 4-6, boys youth 3Y-5Y)(Medium:Men 6-8, Women 6-10)(Large: Men 8-12, Women 10-13)(XL: Men 12-15)