britax 3 across Safety 1st QuickFit™ All-in-One Convertible Car Seat
SKU: 57970474409
britax 3 across

britax 3 across Safety 1st QuickFit™ All-in-One Convertible Car Seat

Sale price$23.75 Regular price$26.39
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 2 - Jul 7

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For Your Every Summer RSVP, with Code: SUMMER15

Description

britax 3 across Safety 1st QuickFit™ All-in-One Convertible Car SeatThe Safety 1st QuickFit All in One Convertible Car Seat for babies, toddlers, and big kids gives your child a secure, comfortable ride through three stages: rear facing car seat (540 lbs., 19"40"), forward facing car seat (3065 lbs., 34. 4"49"), and belt positioning booster seat (40100 lbs., 43. 4"52"). Designed as a grow with me car seat, its the all in one solution for years of secure travel. The QuickFit harness adds convenience in both rear and

The Safety 1st QuickFit™ All-in-One Convertible Car Seat for babies, toddlers, and big kids gives your child a secure, comfortable ride through three stages: rear facing car seat (5–40 lbs., 19"–40"), forward facing car seat (30–65 lbs., 34.4"–49"), and belt positioning booster seat (40–100 lbs., 43.4"–52"). Designed as a grow with me car seat, it’s the all in one solution for years of secure travel.

The QuickFit™ harness adds convenience in both rear- and forward-facing modes by allowing you to adjust the headrest and harness height in one simple step—no need to uninstall the seat or rethread the harness. Plus, the one-hand-adjust headrest makes it effortless to ensure the perfect fit. 

When your child outgrows the forward-facing carseat mode, simply remove the harness and transition the seat into a belt-positioning booster. Its slim design means you can fit three little ones across the back seat of most cars.

For easy care, the seat pad removes quickly without separating the harness and is both machine washable and dryer safe.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57970474409

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Christopher Johnson
San Leandro, US
★★★★★ 5
Nice
Fit perfectly works the same
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Reviewed in the United States on July 15, 2023
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mike s.
Battle Creek, US
★★★★★ 1
Starter
Didn't even last two months having to replace it already
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Reviewed in the United States on March 22, 2026
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Yianni Tripodis
Omaha, US
★★★★★ 5
Price/Quality
Packaged very well, perfect fit and the quality looks great. Well worth the price.
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Reviewed in the United States on April 11, 2026
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Roscoe and Tori
Cuba, US
★★★★★ 5
DIY!!
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Reviewed in the United States on May 19, 2026
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Ben W.
Fort Morgan, US
★★★★★ 5
Perfect replacement
Perfect replacement for our 2016 Acura RDX. Easy to install.
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Reviewed in the United States on May 3, 2026

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