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Ships within 48 hours · Estimated delivery Nov 14 - Nov 19
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Description
britax marathon convert to booster Britax Grow With You Harness Booster Car SeatGrow With You harness 2 booster car seat grows with your child from toddler to big kid. Its made with premium fabrics and padding for superior comfort and style. Installing the seat is simple using the premium, quick push LATCH connectors. 2 layers of side impact protection surround the head, neck & torso. Plus, SafeCell Technology in the base acts as a crumple zone to help absorb crash energy. Quickly adjust the 9 position harness & headrest using
Grow With You™ harness-2-booster car seat grows with your child from toddler to big kid. It’s made with premium fabrics and padding for superior comfort and style. Installing the seat is simple using the premium, quick-push LATCH connectors. 2 layers of side impact protection surround the head, neck & torso. Plus, SafeCell Technology in the base acts as a crumple zone to help absorb crash energy.
Quickly adjust the 9-position harness & headrest using just one hand for the proper fit as your child grows. Once they’re ready to use the seat belt, the 5-point harness tucks away, transitioning to a belt-positioning booster. Color-coded guides help you and your child route the seat belt through the right paths. With arm rests, cup holders and harness comfort pads, even big kids enjoy the ride.
Features:
- Harness mode 25lbs - 65 lbs; Booster mode 40 lbs -120 lbs.
- Stylish, soft-knit fabrics look great in your backseat.
- SafeCell Technology acts as a crumple zone, helping to absorb crash energy.
- Industrial strength steel frame reinforces the seat structure to help keep it stabilized.
- V-shaped tether with staged-release stitches helps slow and reduce forward movement during a crash.
- 2 Layers of Side Impact Protection: Energy-absorbing shell and foam-lined headrest protect your child’s head, neck, and torso.
- Premium, quick-push LATCH connectors for simple, secure installation.
- 9-position, quick-adjust harness & headrest move together using one hand for the proper fit as your child grows.
- 2-position buckle can be moved outward to accommodate your growing child.
- 2 recline positions help you find the most comfortable fit for your child and the best fit for your vehicle.
- 4 cup and snack holders keep drinks, snacks, and toys within reach.
- Harness comfort pads keep your child’s neck from rubbing against the harness strap.
- Nap-friendly padding & fabrics for superior comfort and a quiet ride.
- Color-coded belt guides make it easy for you and your child to route the seat belt through the right paths.
- Easy-to-remove cover for cleaning without uninstalling the car seat or removing the harness.
- Flip-forward buckle stays out of the way for easy boarding.
- Easy-to-clean arm rests help your child ride comfortably.
- Proudly designed, tested and built in the USA with US and global components for safety and quality.
Specifications:
- Product Dimensions: 21" L x 19" W x 25" H
- Car Seat Weight: 23 lbs
- Child Weight Capacity:
- Harness mode 25–65 lbs
- Booster mode 40–120 lbs
- Child Height Capacity: Up to 63"
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 4
Absolutely great for travel but not enough wattage to charge a macbook without the macbook brick.
So this thing is absolutely amazing for travel. The extension cord is a great length. The usb ports are secure and snug and it really works very well, it's by FAR my favorite adapter to travel with. I do have one nitpick - the photos clearly show it charging a macbook and yes, it can but not with a straight cable you still need to plug in the macbook power brick to it. I was hoping to avoid that but this adapter does not have enough wattage to charge a macbook without the brick. I included two photos showing the difference in wattage between this and an macbook power brick.
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Reviewed in the United States on August 3, 2022
★★★★★ 5
Great for use in Italy!
We spent 3 weeks in Italy in May of 2023. This was so easy to use for making sure all of our cell phones and power bricks were fully charged for the next day of discovery while in Italy. Plugged in effortlessly everywhere we stayed in Italy. We used all the charging ports and the USA outlets for two dual voltage power packs (remember the Italian grid is 240VAC not 120VAC like in USA) and my dual voltage CPAP power brick. No problems any where - it worked flawlessly. I would not suggest using it for curling irons or blow dryers or any very high wattage devices and anything you plug into it that does not say dual voltage on the device may be destroyed and possible catch fire! So do be aware of what you use with it as it does not drop the voltage to 120VAC from the 240VAC Italian wall outlets. Nice feature is that it comes with an adapter you can use when you get back to USA so you can use it at home till you pack your bags for the next trip!
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Reviewed in the United States on June 15, 2023
★★★★★ 5
Worked as expected, lots of USB ports.
Just used on my trip to Paris, worked well and I liked having so many USB ports. The long cord was great because my hotel was rather vintage and the outlets weren't in convenient places. Glad to see it will also work for my next trip. I appreciated that it came with adapters for the US also so I could test it at home before I left.
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Perfect for travel!
These "extension cord" power adapters were perfect for us during a recent trip to Europe! They come with multiple adapters so that you can use the adapter in several countries. Best of all, one of the adapters is for North America, so we can still use them at home! Each adapter has three 3-prong plug sockets (meaning you can use either 2-prong or 3-prong plugs), one of which is set slightly apart from the other two to accommodate a larger plug. Each has four USB ports, plus one USB-C port. Plus, it has a 5-foot extension cord, so you can reach that one socket that never seems to be where you actually need it to be! That made it perfect to be able to set the adapter on the bedside table and charge all of our devices at once, but still keep our phones close at hand for checking time, setting alarms, etc. With all of that in one little box, we were able to eliminate the bag-full of various adapters we've had to pack for past trips. Definitely recommend these for your travel needs!
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Reviewed in the United States on May 22, 2024
★★★★★ 5
What an amazing adapter/outlet!
Style: Type C/G/A-Most Countries-3FT
This adapter/outlet is the best I've used for my travels (Internationally). It stands out in a crowded market with its versatility and convenience. It supports plugs from many countries, including the US, UK, EU, Asia and Africa, making it an ideal companion for travelers.
Please note: that this outlet does not convert voltage (iPhones/Tablets/Gadgets with USB connections are OK).
Design and Build Quality:
The adapter is compact and well-built, featuring a sturdy design that can withstand the rigors of travel. It fits in the of your hand (adults) and takes no luggage space at all. The 3ft cable from the outlet is helpful so that the outlet sits away from the wall allowing plenty of room on a table/stand, for multi-devices to be charged without congestion.
Functionality:
One of the standout features of this adapter is its multiple USB ports. It includes 2 USB-A and 2 USB-C port, allowing you to charge multiple devices simultaneously and quickly. This is particularly useful for charging smartphones, tablets, and other gadgets without needing multiple adapters.
Comes with 2 additional outlet attachments to be used either in UK/US/Africa/Asia
Performance:
The adapter performs exceptionally well, providing a stable and reliable connection. The USB ports offer fast charging, which is a significant advantage when you’re on the go.
Pros:
Supports plugs from many countries
Multiple USB ports (2 USB-A and 2 USB-C)
Compact and durable design
Fast charging capabilities
Cons:
None so far
Conclusion: Very happy with this International outlet that can also be used for daily usage.
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Reviewed in the United States on January 12, 2025