The Jay® J2 Deep ContourTM wheelchair cushion can generally be categorized as a gel cushion due to its pressure-distributing gel-filled pouch component. Sunrise Medical—the manufacturer of this product—specifies this cushion as follows.
The optional plywood board - the rightmost element in the picture - is sold separately (it does NOT come with this cushion). The optional drop seat hardware (used to lower the cushion below the standard seat height) does NOT come with this cushion. Sunrise Medical's "ballistic stretch" cover comes with this J2 Deep Contour wheelchair cushion.