STX K18 Arm Pads - Men's With a design inspired by pro attacker Kyle Harrison, the STX K18 Arm Guard is geared for high-impact play. A full-length, soft mesh sleeve, plastic elbow caps, and a flexible three-part pad combine to bring protection that is still comfortable to wear. Adjustable top and bottom straps keep the guard fitting properly for enhanced forearm protection. Finished with custom K18 details. Sizing: S (for players 71-90 pounds), M (for players 91-140 pounds), L (for players over 140 pounds).