18 x 16 x 4 * 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 *HCPCS Suggested Code: K0108