When you put on the EvoShield(R) Gel-To-Shell(TM) Thumb Guard, you're equipped with the strongest and lightest protection, enabling you to play to your potential. This thumb guard molds to fit your hand to give you the best fit, comfort, and protection. When your gear molds to you, so will the playbook. Next Level Protection Gel-To-Shell(TM) custom-molding thumb guard molds to athletes thumb shape, ensuring a perfect fit Dispersion Technology disperses the force of impact minimizing felt impact Thin Shields allow for complete comfort and flexibility Shield is hand washable, air dry Fitting Measure length between thumb knuckle and base of hand to determine best fitting size Shield Coverage: Large - 4.5", Small - 3.25"