Optimum Comfort Gel Cushion 18 x 16 x 3 Bed Wetting Alarms Lifting Capacity: 450 Lbs Autoclavable Up to 325 Lifting Capacity: 450 Lbs gross movements of hands fingers and arms and fingertip dexterity as necessary in assembly tasks * Comes complete with pins collars and washers and an examiner's manual with norms * Developed by Joseph Tiffin Ph * Unique channeled gel bladder prevents gel migration in high pressure areas * Gel channels provide relief over the entire cushion area * Foam base provides additional support * Inner foam core has a liner to protect the integrity of the foam * High end cover with straps * Meridian Optimum Comfort Gel Cushion (18 x 16 )