Product features this lumbar cushion made of elastic, steel wire frame and nylon nets help massage your back, much less pressures while driving or working great relax massage support for seat in the car, office or home the beads help massage your back, much less pressures while driving or working mesh material allows air circulation to keep you cool attaches by elastic, applicable for any seats with back material elastic, steel wire frame and nylon nets colour black size 420 x 360 x 100 mm/16.54 x 14.17 x 3.94 inch net weight 140 g/4.94 oz product specifications package contents 1 x lumbar cushion.