Ortho Glass® Splint Roll, White, 5 Inch x 5 Yard, 1 Each Irrigation Trays Syringes Clear transparent plastic permits observation Style:Pair (Left & Right) Clear transparent plastic permits observation of joint s axis of motion and its range of motion * The 360¯ head has three scales calibrated to be used with the ISOM (International Standards of Measurement STFR) system * One arm has a linear scale in inches and centimeters * Scale reads 1¯ increments 5 * Now you can lay your face down without any strain or stress on your back * The gentle slope on this polyurethance pillow allows for better comfort for anyone that must lay face down for relaxation or medical conditions * The special U shaped opening gently cradles the face while keeping the spine in the correct position * Unique comfort channel on one side to allow women to lay face down comfortably * Reverse side of pillow is flat for men * Polyurethane foam with washable cover * Patented roll form eliminates any wasted product No wrong side application