Wagner Body Science Premium Support Knee X-Action Medium offers stabilizing bars for relief from sprains and pain. Provides compression without restricting movement, assisting in healing injuries. Key Features Relief from sprains and pain Provides stability and compression Assists healing and provides support Side stabilising bars Key Materials: Elastic Knit Fabric; Integrated silicone/polymer rings.Wagner: Innovators in joint support and compression technology.Measure Circumference Of The Knee, Refer To Size Chart. Wear Against The Skin. Gently Pull The Support Up The Leg And Over The Knee With Cross Behind The Knee Cap. Must Be Firm, Comfortable, And Not Pinch.Sensitivity To Elastic Or Elastic Blends May Result In Rash Or Irritation; Discontinue Use If This Occurs And Consult A Medical Advisor.