Featuring two cup holders, open-loop seat belt guides and a machine-washable seat pad, it’s amazing that this booster can fold up to half its size! Perfect for protecting older children and passengers who are ready to graduate from a harness booster, the TurboBooster is designed to protect children ages 4 to 10, who are between 40 and 100 pounds and 40 to 57 inches tall. And, no, we still can’t get ahold of Danny DeVito to have him try it out.