Veridian Healthcare 360o Reusable Gel Sleeve (Large) Compression Treatment for Pain and Swelling. 5" ID x 6" L; Revolutionary gel sleeve surrounds treatment area and delivers soothing comfort and compression; Helps relieve pain and swelling; Durable clinical grade polyurethane gel sleeve; Pliable gel remains flexible and conforms to body contours; Patented roll-on design allows for hands free application; Non-toxic latex-free; Includes a cotton compression sleeve to prevent direct contact to skin; Easy to use: freeze refrigerate hot water or microwave.