ABS - Made of high quality medical grade ABS and stainless steel material, the product is well constructed and sturdy, non-slip design, will protect your heel and calf muscles from hurt. - - Features a textured surface and a plastic/rubber lip for heels to prevent my feet from sliding off the board. - You can stand on it or sit on the chair, choose the right position, relief your muscle, keep your body health.These light-weighted foot slant board is suitable and flexible for use in home, office, travel and indoor-outdoor exercise,it is collapsible, very easy to carry. - This adjustable balance board helps to make your muscles and calf stretching which keeps plantar fasciitis flare ups away. Helps you stretch properly and reduce the chance of injury. - You can stand on it or sit on the chair, choose the right position, relief your muscle, keep your body health.These light-weighted foot slant board is suitable and flexible for use in home, office, travel and indoor-outdoor exercise, it is collapsible, very easy to carry. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store