BRUCE BOLT Premium Purple Arm Sleeve Sizes:Adult L/XL * Reinforced front double knee

* Reinforced front double knee protector straps for added durability for indoor workouts

Expansive single-lens shield offers 360 degree visibility for unobstructed views and optimal field of vision

* Big League-grade Ink Dot certified

Because they are pulled from the production process of all Marucci bats

Custom A2000 CM33

BRUCE BOLT Premium Purple Arm Sleeve Sizes:Adult L/XL * Reinforced front double kneeThrow Harder Recover Faster BRUCE BOLT Premium Purple graduated compression arm sleeves are designed to increase blood flow. They also decrease muscle vibration during the throwing motion to keep your arm feeling live throughout the game. THROW HARDER, LONGER: Graduated compression sleeves increase blood flow to the arm. They accomplish this by dilating the players arteries by 40% and by compressing the veins. Increased blood flow means more oxygen.