Strap design adjust it to your perfect fit and keeps your pillow securely in placeBack cushion will provide superior lumbar spinal support that will improve your posturePain relies support, easy to travel and move to/from home office carGreat relax massage support for seat in the car, office or home. The beads help massage your back, much less pressures while driving or working. Attaches by elastic, applicable for any seats with back. Color: Black material: Ice silksize: Approx. 46 x 39cmweight: Approx. 153g/5.4oz. Package includes: 1 x Mesh Lumbar Back Brace Support Car Seat Chair CushionNote: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.