New tray design allows for quick attachment to and removal from walker. Clips onto the side bar when not needed. Standard size measures 12-3/4" deep, 21-1/4" wide at the base and 15-1/2" wide at the top; fits walkers with a 17"–18" front horizontal bar. Bariatric size measures 14-1/2"D x 23-7/8"W at the base and 17-1/2"W at the top; fits walkers with a front horizontal bar 20"–21" wide. Both sizes support up to 10 lbs. Top-rack dishwasher safe. Walker sold separately.