DMI Egg Crate Sculpted Foam Chair Cushion, Seat Cushion for Car, Office Chair or Wheelchair Cushion to Relieve Back, Tail Bone Pain, Sciatica, 18x16x4, Without Back - Walmart.com
DMI Foam Mattress Topper, Egg Crate Foam Pad, Mattress Pad and Bed Topper for Support, Air Circulation, Pressure Relief and Weight Distribution, Hospital Size Mattress, 33 x 72 x 4 - Walmart.com