LUMBAR CUSHION (FOAM) 18X17 LUMEX The E&J Lumbar Cushions provides back support, comfort, and helps improve seating posture. Cushion Features • 2" (5.1 cm) cushion with lumbar support • High density foam for exceptional comfort and support Cover Features • Fluid-resistant stretch top cover, reduces shear and friction • Antimicrobial • Flame retardant • Removable and washable • Back strap secures cushion in place