NTOA (National Tactical Officers Association) Member Tested & Recommended. One Size Fits Most. Neoprene Outer For Comfort. High Density. Closed Cell Foam Core Contoured To Prevent Slippage. Textured Surface In Contact Area Increases Durability, And Provides A Firm Grip. Dual Strap Design. Neoprene is Manufactured by Du-Pont. Hook & Loop Closure For Custom Fit. Size 5.25 x 6.75 inches.