The UpNGo backless seat booster gives your child the boost they need to move up into the final car seat stage and go anywhere with confidence. Designed for children from 40-120 lbs and 46”-63", this booster 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. It also includes a shoulder belt guide to help keep the seat belt in the right place. The slim 17.1” SpaceSaver design means there's more room for siblings or carpoolers, and the soft cushioning and large, 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. They can keep their favorite after-school snacks and drinks close at hand in the two cup holders, which are dishwasher-safe for easy cleanup. The booster seat cover is safe to machine wash and dry, and it's naturally flame-retardant with no added FR chemicals. The color-coded belt guides help kids learn how to buckle up correctly as they make the final car seat transition, setting them up for safety no matter where their journey takes them.