Bubblebum Booster Car Seat, Inflatable Booster Seat for Kids, Travel Carseat, Backless Portable Child Safety Seats for Car, Inflatable Seats for Cars 40-100 lbs, for 4 Year Old + Toddler, Kid – Pink

Customers find the car seat easy to move between cars and appreciate its portability for travel, with one mentioning it's great for cross-country touring. Moreover, the booster works well in different vehicles, including planes, and is comfortable, with one customer noting it allows adults to sit in the back. Additionally, the product fits well in various spaces, including between two car seats and in strollers. However, the inflation and stability aspects receive mixed feedback - while it inflates and deflates easily, some customers report it doesn't stay inflated, and customers note issues with the base sliding around.