What is the Advanced Adjustable Knee Support with Four Stays? The advanced adjustable knee support with four stays features moisture wicking fabric & has been specifically designed to provide comfortable & additional support to the knee & is ideal for preventing sprains. It can be used to support an injured knee during the recovery process & helps to relieve pain & pressure, without restricting movement. When can I use the Advanced Adjustable Knee Support? Easy to use & suitable for daily use or during sports, this adjustable knee support is ideal to help support an injured knee during the recovery process & can also help to prevent knee sprains. The support is also ideal for weak or arthritic knees too. How does the Advanced Adjustable Knee Support Work? Featuring an interior breathable cotton lining to ensure of total comfort & moisture absorption combined with a durable exterior fabric for firm & easy closure this knee support will provide additional support to the knee & helps to relieve pressure & pain. This knee support also has a middle elastic layer which features a heat/moisture penetrating film for ventilation. Composition: cotton 30%, Nylon 20%, Spandex 20%, Rubber 20%, Steel 10%. H&-wash only. One size fits most.