The Cosco Kids Topside Booster Seat Bundle includes two complementary booster seats to lift your growing child and provide the extra height needed to properly position seatbelts. The first booster is a backless model featuring a plush pad for comfort. Weighing under 2 pounds, it's lightweight and easy to move between vehicles. The second booster has a highback design with ultra-plush padding for maximum comfort during rides. It's also lightweight at 5 pounds and includes convenient features like a carry handle and cup holder. Both boosters are designed for children 40-100 pounds and 43-57 inches tall. The backless seat provides a basic lift while the highback model offers back support and armrests. With two seats to choose from, you can select the appropriate booster for your child's age and size during different growth stages. The bundle ensures you have booster seats covered as your child grows.