Double-chamber construction relieves pressure for heavy patients * Water-based gel relieves pressure and cools to reduce skin-damaging perspiration * High-density foam prevents bottoming-out * Stable design promotes sitting comfort * Low-shear cover reduces friction & removes for easy laundering * Incontinent-proof vinyl covers wipe clean for easy care * Safety strap secures cushion to wheelchair * Non-slip bottom on outer covers provides extra safety * New anti-slip bottom for added user safety *