The Baby Trend Hybrid SI™ 3-in-1 Combination Booster Seat is designed to support growing riders with a versatile multi-stage format and side-impact focused design. Built for long-term use, it helps families transition across key stages while keeping comfort and support in mind. An adjustable headrest makes it easier to tailor the seat to your child as they grow, and cushioned seating helps keep everyday trips comfortable. Many families find that taking a moment to dial in the fit for their child helps maximize comfort from day one. With a balance of adaptability, comfort, and everyday practicality, Hybrid SI™ is a smart choice for families looking for long-lasting booster versatility.