EvoShield X-SRZ Realtree EDGE Camo Batter’s Two-Piece Elbow Guard Gel-to-Shell Technology: Air activated material that transforms the guard from a malleable gel into a customized, form-fitting shield in 30 minutes; Dispersion Technology: For a personalized fit and maximum protection. Our guards fit right to your body, which allows for the most efficient protection possible. Engineered to mold smoothly around the intended area, objects deflect and disperse across the entirety of the guard. Custom Molding Gear: All Gel-to-Shell Technology products create a customized, one-to-one fit for the player. Ergonomic Design: Engineered for a personalized fit and maximum protection. One Size: For adult players with arm circumference greater than 10 inches. Measure the circumference of your arm around your bicep.