Wondergel Doublegel Gel Seat Cushion NEW Model - 2" Ultra-soft, ultra-strong, solid rubber-like elastic material provides cradling relief for bony prominences and firm Engineered to the human comfort threshold, adjusting to any individual's body shape or weight Double gel reversible design features a softer side for exceptional comfort, plus a firmer side for maximum support Gel fill breathes, so it stays cool while in use Durable elastic gel consistency immediately returns to its original shape, with no permanent depressions