ChairPro Gel/Foam Pad w/Alarm 18 x 16 x 2-1/2

18 x 16 x 2 1/2 * Pressure relief plus safety monitoring * Two-chamber gel cushion provides pressure relief comfort and stability * Fluid-proof vinyl cover protects against incontinence * Launderable outer cover reduces skin shear * Alarm sensor is protected in vinyl pocket beneath cushion * Alarm initiates when user rises and resets when he/she sits * System operates on single 9 volt battery (included) * Alarm sensor and cushion guaranteed for one year * Available in three cushion sizes