Precision Neoprene Knee Stabilizer (xlarge) For mild to moderate medial and lateral instability of the knee and conditions requiring extra support. Compression straps and spiral stays provide added support and stability. Material: 65% neoprene, 12% nylon, 8% stainless steel (stays), 6% polyester, 5% elastic, 4% polypropylene. Features: For mild to moderate medial and lateral instability of the knee and conditions requiring extra support. Compression straps and spiral stays provide added support and stability. Material: 65% neoprene, 12% nylon, 8% stainless steel (stays), 6% polyester, 5% elastic, 4% polypropylene Specifications: Dimensions: H:35.7 x W:19.7 x D:4.8 cm Model Number: TRS110XL