(SEE AVAILABILITY ABOVE FOR ESTIMATED DELIVERY) - Skil - Care J - Hook Drop Seat with Gel Cushion 18"W x 16"D x 3½"H (46 x 41 x 9 cm) - Skil - Care J - Hook Drop Seat with Gel Cushion - J - hooks lower seat up to 4". Seat can be level or tilted. Conveniently removes for chair folding, but has two safety latches to prevent accidental dislodging from wheelchair frame. Comes with gel - foam Position Plus cushion with 4 - section gel top layer & underlying foam. Factory sealed in vinyl for incontinence protection & easy cleaning. Washable two - way stretch cover increases comfort & reduces skin shear. Latex free. 16"D x 3 1/2"H. - Rolyan products are internationally licensed & manufactured for home & clinical use. Most of their products offer a lifetime warranty.