PROTECT YOUR GAME. Designed by the nation's top Professional Athletic Trainers and the only MLB Authentic baseball thumb guard, the EvoShield Baseball Catcher's Thumb Guard custom molds in minutes to provide the ultimate thumb protection. This thin guard provides protection where you need it - whether it's your thumb, fingers or palm. The Shield can be worn inside the catcher's glove to help prevent jammed thumbs, GameKeeper's thumb, UCL injuries or for added palm protection. Features Available in 2 sizes: Small/Youth (for ages 9-12, measures 4.25 x 3.5) and Large (ages 13 & up, measures 4.5 x 4.5)Includes: 1 Protective Multi-Use Guard and Gauze Wrap for FittingPatented 1/4 ultrathin, lightweight composite material Custom-molding pads begin soft & flexible, and transform into hard & protectiveProvides a comfortable, custom fit for protection that doesn't interfere with performanceImpact is dispersed, not absorbed, providing better protection than traditional protective gearOnce formed, Shield provides season long protectionShields are hand washable. Air dry Simply remove the Shield from the foil bag to air activate the custom-molding process. The Gel-to-Shell Technology transforms the soft inserts into protective Shields in minutes. Testimonial I like the Evoshield products because they're customized. Everything fits perfectly, and it's giving me great protection. When the Padres made me a catcher I heard a lot of stories about catchers who broke their thumb. After a couple bullpens I felt that my thumb was kinda sore so I asked my agent to send me on of those Evoshield thumb guards. They're so comfortable, it's unbelieveable. As a catcher, their product gives me the protection I need to elevate my game. - ** Rodney Daal, Minor League Catcher for the San Diego Padres**