Dura Gel Base 3G 4Ea Cs 18 X 18 X 3 Cushion Safe Shield Adult Pediatric 4 ft (1 sales Adult Pediatric 4 ft (1 CPT LEXMARK TONER 501X 10K PAGE YIELD MS410d MS410dn MS510dn MS610de MS610dn MS610dte MS610dtn The cushion uses a high density base foam for durability in combination with a convoluted topper for comfort and airflow Features a comfortable convoluted foam topper with a high density base foam Features a specialized Dura Gel™ center layer surrounded by comfortable foam layers on the top and bottom of the cushion The cover has a four way stretch top with a no slip base fabric and has a strap at the back to secure the cushion firmly to the chair Accommodates a wide range of body shapes