Relief Pak® Cold n’ Hot® Sensaflex® Compress Hot Cold Pack, 3 x 5 Inch, 1 Each Stand Up Assists Transfer Item 18 x 16 x 2 HERH6036TW 18 x 16 x 2 * Proven design for pressure relief and position equalization * Position equalization results from the variable action of individual air cells * Adjustable air pressure provides relief based on user s individual needs * Easy to use air pump is included * Low surface tension reduces friction and skin shear * Low shear fluid proof cloth cover (not shown) protects against incontinence deep vein thrombosis swelling and tension headaches Relief Pak Cold n' Hot compress has a comfortable soft fabric that conforms to the curves of your skin