The Safety 1st car seat bundle includes the Everslim DLX Convertible Car Seat and the Grand 2-in-1 Booster Car Seat to cover your child's needs from infancy through the booster seat years. The versatile 4-in-1 Everslim DLX converts from a rear-facing infant car seat supporting 5-40 lbs to a forward-facing toddler car seat supporting 22-65 lbs. It then transitions to a belt-positioning booster and backless booster for children 40-100 lbs up to 10 years old. Its slim design allows 3 car seats to fit across standard back seats. The Grand 2-in-1 also features a forward-facing harness for 30-65 lbs and belt-positioning booster mode for 40-120 lbs. With deluxe fabric for comfort, it is lightweight and fits 3 across most back seats. The seats complement each other in their convertible capabilities and slim designs to adapt with your growing child from infancy through the grade school years while fitting multiple seats when needed for siblings.