Contoured Foam Cervical Pillow Standard w/White Cover Cane Seats Accepted by leading authorities as Toilet Seat Covers

Contoured Foam Cervical Pillow Standard w White Cover Cane Seats Accepted by leading authorities as Toilet Seat Covers Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red green blindness each in two forms complete and incomplete * Includes four special plates for tests to determine the kind and degree of defect in color vision * Makes use of the peculiarity that in red green blindness blue and yellow appear remarkably bright compared with red and green * Color plates encased in specially designed album type books for ease of handling * Detailed instructions included 25 17 (measurement taken just under the knee cap while knee is slightly bent) * Thermal support for prevention treatment & rehabilitation of the knee * Provides protection and support against general wear and tear including sprains strains and twisted knees * Anatomically shaped in 3 pieces for more comfort and a better fit * Thermoskin increases elasticity of muscles tendons and ligaments to reduce the risk of injury when under stress and strain * Clinically proven to increase surface skin and subcutaneous temperature between 2 3 degrees F the optimal level to make tendons and muscles more pliable and elastic to provide optimal muscle function Polyurethane foam with height variations for different comfort levels * Aids in the reduction of cramps and stiff neck during sleep * Removable washable white cover * Dimensions: 18 x 16 x3