BubbleBum Backless Booster Car Seat – Inflatable, Portable Travel Booster for Kids 40–100 lbs, Ages 4–11, Fits 3 Across, Rideshare & Carpool, FMVSS 213 Certified – Rainbow

Customers find the car seat easy to move between cars and appreciate its portability, with one mentioning it works well in different vehicles. The booster is comfortable and fits well in various spaces, including between two car seats and in strollers, while being easy to assemble and disassemble. While it inflates and deflates easily, some customers report issues with it not staying inflated. The stability receives mixed feedback, with several customers noting their children slip off the seat.