Evoshield SRZ-1 Batter's Elbow GuardFeatures: * Provides extra level of protection for lead elbow from painful ball impacts * Gel-To-Shella,, transforms guard from soft and flexible to hard and protective * Dispersion technology spreads force of impact across surface of shield * Shield molds to user to provide a personalized fit for superior protection * Designed to be worn on elbow closest to pitcher * Shield is hand washable and should be air dried * Guard Coverage: Small (8"W x 5"H); Large (9"W x 6"H) * Note: To determine best fit, measure arm circumference slightly above the elbow * Small: 10" and under / Large: 10" and over