This Cushion prevents residents from sliding out of the wheelchair and simultanously prevents pressure sores. * Anti-thrust barrier eliminates forward and sacral sitting problems. * Helps maintain pelvic neutrality. * High-density foam increases comfort and relieves pressure. * Contoured base eliminates sling-seat hammocking and minimizes seat rise. * Low-Shear II wipe-clean outer cover reduces skin damaging friction. * Optional water-based gel pod provides pressure relief in the coccyx area. * Available with or without firm hammock relief base. *