Specifications: Detachable double aluminum plates and foldable aluminum plate supports are added on both sides of the knees, which can be disassembled and used according to personal needs. This material is wear-resistant and durable, smooth and easy to penetrate, strong and not easy to damage. There are four straps down with polyester fiber straps. After the knee pads are worn, the tension and compression of the straps can be adjusted to give you an extra layer of stability. The connection between the magic tape and the strap is upgraded to a seamless hot pressing process, which can avoid the possibility of the traditional knitting and sewing process from getting off the line. Item Name: Knee Pad Material: Nylon, SBR, OK Cloth, Aluminum Alloy Features: Durable, Easy to Use, Comfortable Size: L: Suitable for Leg Girth: 38cm-46cm/14.96"-18.11" (Approx.) XL: Suitable for Leg Girth: 45cm-56cm/17.72"-22.05" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Knee Pad