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Graco® Tranzitions 3-in-1 Harness Booster Car Seat, Forward Facing Car Seat, Highback, to Backless Booster, Proof
The Graco Tranzitions 3-in-1 Harness Booster is designed to grow with your child and go with you, wherever your journeys take you—from car to carpool and beyond. This lightweight car seat transitions seamlessly from harness booster (26.5-65 lb) to highback booster (40-100 lb*) to backless booster (40-100 lb) and features the Simply Safe Adjust Harness System, which adjusts your harness and headrest to 9 height positions, with no rethreading. It features two rotating cup holders to keep your child happy, a machine washable seat pad, and harness covers. *To continue to meet industry standards, we have increased the weight minimum from 30 to 40 lb.
Price and availability captured 2026-08-21 and subject to change. The price shown on Amazon at the time of purchase applies.
0% above the 1-year average. Record low $139.99.
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Specifications, review intelligence and safety
- • 3-in-1 harness booster helps protect your child, from toddler to youth
- • Grows with your child from forward-facing harness (26.5-65 lb) to highback booster (40-100 lb*) to backless booster (40-100 lb) *To continue to meet industry standards, we have increased the weight minimum from 30 to 40 lb
- • No-Rethread Simply Safe Adjust Harness System allows the headrest and harness to adjust together in one motion
- • Lightweight, portable seat is ideal for busy, active parents
- • One-hand, 9-position adjustable headrest grows with your child
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