This product is extrmely defective and dangerous. My husband used it one time and the rubber strap came off and smacked him in both eyes from floor level causing hemorraging and severe lacerations to both eyes. Also sweleling, brusing and black eyes. His head hurts severely and it has caused disorientation. (If the bleeding does not stop he will have to be sent by ambulance to Spokane to a hospital 70* miles away.) Our eye doctor met us at his office soon after the accident and said it was severe injuries. He has to go back tomorrow and all... read full review »