Wheelchair Cushion Foam Gel 18X18X3 E & J Duragel Base 3 Urology Convenient unitized box fits into UNGUNLK2 Convenient unitized box fits into any first aid kit The Dynarex Impression Trays are form consistent from tray to tray and are designed to comfortably fit any patient The Dura Gel™ BASE 3G wheelchair cushion reduces surface pressure through the use of a support layer of non aqueous Dura Gel™ Features a comfortable convoluted foam topper with a high density base foam Features a specialized Dura Gel™ center layer surrounded by comfortable foam layers on the top and bottom of the cushion The cover has a four way stretch top with a no slip base fabric and has a strap at the back to secure the cushion firmly to the chair Accommodates a wide range of body shapes