Patented (US 10, 105, 276 B2) straps to provide extra comfort for your legs, ankles and feet Six (6) position adjustable pin system with added patent pending protective cover for easy positioning and safer inverting over strap Systems True balance System for easy inverting with ergonomically ankle holding System Adjustable headrest pad with large and comfortable padded backrest Accommodates users 4ft-10in to 6ft-6in with a 300 lbs. Weight capacity