Deluxe Hinged Knee Support 427. Long sleeve, 4mm thick neoprene support features superior horseshoe buttress, medial and lateral hinges, and 4- way adjustable hyperextension stops at 0°,15°,30° and 45°. Adjustable Velcro® straps and four elastic crossing straps. Offers minor ligamentous and patellar support. Nylon two sides.