SAFCO PRODUCTS-BACKREST,MEMORY FOAM,BK. Lumbar Support Memory Foam Backrest, 14-1/2w x 3-3/4d x 6-3/4h, Black. Memory foam offers ultimate comfort and support. Updated style for additional comfort contours. Offers support along the spine, eliminating stress on pressure points and encouraging circulation. Smooth surface easily wipes clean. Adjustable strap holds cushion in place. Direct support to the small of the back. Back Support Type: Chair; Material(s): Smooth Surface; Width: 14 1/2 in; Depth: 3 3/4 in.