Proflex 4020 Wrist Support's patented design provides essential support and limits wrist flexion (the downward movement of the hand) while keeping wrist in a neutral position. The patented Open-Center stay reduces pressure on the median nerve and to avoid harmful contact stress. Neoprene construction and interior ventilation holes provide a comfortable dry fit. Secure hook-and-loop top closure reduces the bulk on the palm side of the hand. Machine wash air dry.