Air Cell Wheelchair Cushion 18 x 16 x 2 Aneroid Blood Pressure color: yellow Select Ear:Left Ear color: yellow 5 tub section length * 18 tub section depth * 53 total width (both sections joined together) * 18 total seat depth * 16 seat depth * 25 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