Durable, thin, lightweight all purpose Bouldering Knee pad. The one and only knee pads designed, tested and manufactured in the Hueco Tanks valley USA. Super Sticky Durable Rubber NanoSpan 360 Stretch/Flexible Outer High Performance – Low Profile Design Lightweight 223 gram Anodized Aluminum Buckles Sticky Rubber is specially formulated to be super sticky and durable. The 2 mm rubber is thick enough to resist punctures yet thin enough to form to the hold and texture of the rock for maximum grip. It has a long lasting wear and remains sticky throughout its life span. Neopro is a neoprene designed just for sports and abrasion. High Performance – its precise thickness and design allows you to move with full range and motion in comfort. Less bulk equals more control. ONE SIZE FITS MOST (OSFM) This knee bar pad will fit the following sizes: Small – Medium – Large