RiteFix™ Nonwoven Dressing Retention Tape, 1 Inch x 11 Yard, White, 1 Each Smith Nephew Dressings Elevates the knees to relieve Select Ear:Left Ear Elevates the knees to relieve stress on lower spine * Polyurethane foam * Removable white washable cover * Size: 17 X 10 X 6 * 30 40 mmHg (CCL 2) Very Firm Gradient Compression Indication Guide: Chronic venous insufficiency Deep vein thrombosis Post thrombotic syndrome Severe varicose veins Severe edema lymphedema Venous ulcer Lymphedema Orthostatic hypotension Postural hypotension Helps Prevent DVT (Deep Vein Thrombosis) wound dressings and other types of medical devices firmly in place to help ensure their reliable use Medical retention tape uses a hypoallergenic adhesive