Features 1.Manufacturing Material: Made of high quality nylon and polyurethane material, delicate and skin friendly, woven with elastic fabric, providing good air permeability, soft wear and comfort. 2.Stereoscopic Elastic Weaving: Stereoscopic elastic weaving, surrounded by pressurization, prevent kneepad from slipping, 3D elastic integrated weaving is not tight, more focused during movement. 3.Automatic Retracting Of The Edge Technology: Adopt retracting of the edge technology, the edge is glossy and does not tighten the legs, comfortable exercise and durable. 4.Function Features: Elastic weaving, shock absorption and decompression, breathable and perspiration, automatic edging, knee enjoy safety protection. Press around and stabilize the patella, automatically retract the edge without rubbing the foot. 5.You can choose from four sizes. The recommended leg circumference is 37‑43cm / 14.6‑17.0in for size S, 43‑48cm / 17.0‑18.9in for size M, 48‑53cm / 18.9‑20.9in for size L and 53‑58cm / 20.9‑22.8in for size XL. Specification Item Type: Sports Kneepad Product Material: Nylon + Polyurethane Product Color: Black Product Size: Approx.27.2 x 17cm / 10.7 x 6.7in Features: Elastic Weaving, Shock Absorption And Decompression, Breathable And Perspiration, Automatic Edging, Knee Enjoy Safety Protection. Press Around And Stabilize The Patella, Automatically Retracting The Edge Without Rubbing The Foot. Purpose: Wear Knee Pads, Protect Your Knees During Exercise, Prevent Muscle Strain, Sprain. Package List 1 x Knee ;Pad