Designed for children from 18.1-54.4 kg / 40-120 lbs and 116.8-160 cm / 46”-63", the UpNGo backless booster seat combines the portability and convenience that parents look for with kid-approved comfort and style. UpNGo is innovatively designed with PosturePlus™ to help encourage proper posture and seat belt positioning. The slim 43.4 cm / 17.1” SpaceSaver™ design means there’s more room for siblings or carpoolers, and the soft cushioning and padded armrests give your child that extra boost of comfort. Whether they’re heading out for a shopping trip with grandma or hopping in with a friend on their way to a sleepover, they’ll feel confident navigating big-kid trips with this lightweight and easy-to-carry booster.