VANTELIN Knee Support - Size LDescriptionU-Shape Structure support stretching force of the knee by supporting and upholding the patella for daily movements and light exercise.Circular knitting method : seamless design offers a smooth touch and a snug fit.Special thin? lightweight? durable and washable material: comfort and cleanliness for daily wearing.Place of OriginJapanDirectionsSlide leg into knee support with the bottom of the "V" pointing down.Fit the U-shape structure below so that it can support the knee cap from below.Then? adjust the support to take up its slack when straightening your leg.WARNINGDo not use if you have: (1) a sprain? fracture? or ligament injury? (2) peripheral vascular disorder? (3) abnormality such as injury? blotchiness? rash at site where support is to be worn? or (4) chronic dermatitis/allergy to chemical textile or rubber.If you experience any of these? stop using immediately and consult your healthcare professional.Use only as directed.Use correct size.Do not use when sleeping.IngredientsNylon? Polyurethane