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 * Shield is hand washable and should be air dried * For RH hitters, guard should be worn on LEFT elbow * For LH hitters, guard should be worn on RIGHT elbow * Sizes/Dimensions: * S/(8" W x 5" H)A * L/(9" W x 6" H) * To determine best fit, measure arm circumference slightly above the elbow * Small: 10" and under / Large: 10" and over A .