Adjustable Unique Bidirectional Support: Dual adjustment elastic straps provide customized fit and compression for all day comfort. Professional Grade Material: Made of high quality 68% nylon and 32% spandex. Lightweight, breathable and adjustable comfort fit with 4-way elasticated stretch that won't roll, slide or slip down, enhance circulation & oxygenation of the blood thereby increasing muscle performance & accelerate recovery of injured muscles, joints & much more. Pain Relief & Promotes Muscle/Joint Recovery: Compression is proven to Promote muscle recovery and injury prevention, our knee sleeve relieves muscle stiffness, extra soreness and offers rejuvenating relief from arthritis, osteoporosis, tendonitis, pain & discomfort, allowing you to perform at your peak in all situations. Suitable for Any Sports: Our knee brace delivers targeted compression with moderate support for knees.The best knee support sleeve and knee stabilizer for running, athletics, jogging, cycling, weightlifting, squats, soccer, basketball, volleyball, skiing, tennis, golf, walking, hiking, lifting and yoga, just about any sports and exercise activity! You should read the description and size specification carefully before buy this product. Size S:Fit Knee Circumference 30-35cm (11.8-13.8); Size M:Fit Knee Circumference 35-40cm (13.8-15.7); Size L:Fit Knee Circumference 40-45cm(15.7-17.7); Size XL:Fit Knee Circumference 45-50cm (17.7-19.7); Size XXL:Fit Knee Circumference 50-55cm (19.7-21.7) ; Item NO.3403316