FP Painkiller shin and ankle guard crew socks Slate GreyUse these socks when you skate to provide a substantial amount of protection against impacts to your ankles and shins. A must have for both young skaters just learning tricks to those with many summers behind them who are "too dang old" to keep getting bruises in the same old places. A most have for roller derby if you skate with anybody that kicks like a mule (you know who you are!). These socks are one size fits most, roughly US 6 to 12.