AR3516 Size: 16" H x 3.5" W Features: -Armrest.-Lined with a pocket of solid gel.-Easily washed, durable and light weight.-Designed for relief and prevention of shearing.-Easy to apply by just screwing the armrest on to where the existing arm rest is.-Won"t rot or dry out, and will not flow or leak if gel is cut or punctured.-Specifically designed to improve comfort for people using wheelchairs and scooters.-Relieves pressure and provides comfort. Assembly Instructions: -Assembly required. Warranty: -1 Year warranty.