Comfort, Performance, Protection * Prevent Bat Sting ~ Protect your hand from getting jammed * Engineered to Fit Your Hand ~ Comfortably stays in place * Avoid the Death Grip ~Unlock your optimal swing * Made of Shock-Absorbing Polymer * Fits Left or Right-Handed Batter Own the Strike Zone with ThumbPRO! We are happy to answer questions. If you are trying to decide between sizes, feel free to contact us here.