Ballistic Polly Material provides strength and durability. Convenient Upper Tab for easy repositioning on knee Layered Gel Technology over Thick, closed-Cell Foam Padding surrounds knee for the ultimate in support and comfort Non-Skid, Heavy-Duty Cap designed for added stability and wear Neoprene Fabric Liner helps keep knees comfortable throughout the day Slip-Buckle Fastener System with Adjustable straps Large, Adjustable Neoprene Strap for comfort and stability