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Graco Tranzitions 3-in-1 Harness Booster Car Seat, Proof, Black

4.5 stars out of 2542 reviews
(4.5)|
2,542 ratings
Graco Tranzitions 3-in-1 Harness Booster Car Seat, Proof, BlackGraco Tranzitions 3 in 1 Harness Booster Car Seat ProofGraco Tranzitions 3 in 1 Harness Booster Car Seat Marley
Actual Color:Proof
Marley, $139.99
selected, Proof, $139.99

Key item features

  • Graco Tranzitions 3-in-1 Harness Booster Car Seat, Proof, Black
  • Graco Tranzitions 3-in-1 Forward Facing Harness Booster Toddler Car Seat, Proof, 14 lb, 1 Count
  • 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
  • Integrated, rotaing holders help keep your child's drink close
  • Open-loop belt guides help properly position your vehicle’s seat belt
  • Seat pad and harness covers are comfortable and machine washable
  • Graco ProtectPlus Engineered: a combination of the most rigorous crash tests that helps to protect your little one in frontal, side, rear & rollover crashes
Current price is $139.99
Price when purchased online
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  • Free 90-day returns
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Customer ratings & reviews

4.5 out of 5 stars
stars2,542 ratings975 reviews
How item rating is calculated
  1. 5 stars77% (1,963)
  2. 4 stars10% (263)
  3. 3 stars3% (87)
  4. 2 stars2% (50)
  5. 1 star7% (179)

Reviews summary

Pros
  • : Provides additional cushioning for kids during car rides.
  • : Seat fits well in various vehicles.
  • : Simple and convenient to use and adjust.
  • : Process is simple and easy to follow.
Neutral
  • : Can be discreet and secure, but also loose or size-restrictive.
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Showing 1-3 of 975 reviews

Jan 30, 2026
Chelsea
Item details
Color: Proof
5 out of 5 stars review

Verified Purchase

As a mom of three of all different age ranges and tried every car seat, this has been my favorite! I tried a brand before this one for my youngest %26 it was so uncomfortable for my toddler, hard to unbuckle …… I had no choice but to replace! I'm so happy I did, I only wish I had sooner. No complaints for this car seat so far after 4 months!

Helpful?449UHFIEQMDU5959693583
Jul 19, 2025
anonymous
Item details
Color: Marley
5 out of 5 stars review

Verified Purchase

Perfect for Transition

This transition booster seat is perfect for my four-year-old girl, who is among the shorter spectrum (around 95cm). The normal booster would prevent her from sleeping in a comfortable position, but this one is perfect for her height. It is also much easier for her to get in herself. The 3-in-1 harness is also a great feature to ensure the kid's safety. I would definitely recommend this product to families.

Helpful?449UHFIEQMDU5959693583
Oct 6, 2025
Gaby R
5 out of 5 stars review

Seller Verified Purchase

Amazing!

[This review was collected as part of a promotion.] I was very nervous at first since my toddler is pretty tall, but this car seat was WAY better than her original Chico she had. I'm very happy and please and my toddler LOVES it! Very easy to anchor down and light. Very pleased with my purchase

Review from gracobaby.com
Helpful?449UHFIEQMDU5959693583