Knee compression sleeve with closed patella. 5-needle stitch for a flatter, cleaner and stronger seam. Seamless back-of-knee and anatomical design for added comfort. Latex-free neoprene provides thermal/compression therapy. Outer heavy-duty nylon fabric for durability. HSA/FSA Eligible. Fits left or right. Sold piece by piece. This product is not a substitute for medical care. Always seek professional medical advice for the diagnosis and treatment of pain, injury or irritation. Please read size guide and washing instructions below. If you have any questions, please contact customer service .