Optimum Comfort Gel Cushion (18 X 18 ) * 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. * 18 X 18 X 3
