Pay in installments of $6.93 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
maxi cosi car seat using seat belt Maxi Cosi Tanza Belt Positioning Booster SeatA foldable high back booster with rigid UAS connectors and a 10 position headrest, designed for children 18 to 45 kg who need a secure belt positioning solution that travels easily between vehicles. Key Features Rigid UAS (ISOFIX) connectors lock into your vehicle's anchor points in seconds, providing a firm and stable installation without seat belt routing. TensionFix red to green indicators on the base give clear visual confirmation that the booster
A foldable high-back booster with rigid UAS connectors and a 10-position headrest, designed for children 18 to 45 kg who need a secure belt-positioning solution that travels easily between vehicles.
Key Features
- Rigid UAS (ISOFIX) connectors lock into your vehicle's anchor points in seconds, providing a firm and stable installation without seat-belt routing.
- TensionFix™ red-to-green indicators on the base give clear visual confirmation that the booster is securely connected to the vehicle.
- 10-position adjustable headrest grows with your child, keeping the vehicle seat belt properly positioned at the shoulder as they get taller.
- Compact foldable design with a built-in carry handle makes the booster easy to store, carry, and transfer between cars, ideal for carpools and travel.
- PureCosi™ seat fabrics are made without added flame-retardant chemicals, offering a cleaner environment next to your child's skin.
- EcoCare™ 100 percent recycled fabric from plastic bottles is soft, breathable, and built to last through years of daily use.
- All seat fabrics and foam cushions are machine washable and dryer safe, keeping the booster fresh after snacks, spills, and long road trips.
- Removable cup holder keeps drinks and small items within your child's reach, and cleans up quickly when needed.
- Engineered and tested to meet or exceed Canadian federal safety standards for belt-positioning booster seats.
Specifications
| Child Weight Range | 18–45 kg (40–100 lbs) |
| Child Height Range | 110–145 cm (43–57 in) |
| Headrest Positions | 10 |
| Installation | Rigid UAS (ISOFIX) connectors with TensionFix™ indicators |
| Fold | Compact foldable with carry handle |
| Fabric | EcoCare™ 100% recycled + PureCosi™ (no added flame retardants) |
| Machine Washable | Yes, fabrics and cushions; dryer safe |
| Cup Holder | Removable, included |
| Safety Standards | Meets or exceeds federal safety standards |
Frequently Asked Questions
At what age is my child ready for a belt-positioning booster like the Tanza?
The Tanza is intended for children who have outgrown their forward-facing harnessed car seat and weigh between 18 and 45 kg (40–100 lbs) while measuring 110 to 145 cm (43–57 in) tall. Most children reach this stage around age four to five, but always check your current car seat's outgrown limits first.
Can I install the Tanza without the UAS connectors?
The Tanza is designed to be used with its rigid UAS connectors for a secure fit. Refer to the product manual for your specific vehicle compatibility and installation guidance.
Is the Tanza allowed on airplanes?
Belt-positioning boosters rely on the vehicle's lap-and-shoulder belt and are generally not certified for aircraft use. Check airline policies before travelling.
Warranty & Notes
Maxi-Cosi products are backed by a 2-year manufacturer warranty from the original date of purchase covering defects in materials and workmanship under normal use. Register your product at the Maxi-Cosi website for full warranty support. Always ensure your child meets both the weight and height requirements before using this booster. The vehicle seat belt must cross the child's shoulder and lap correctly when the booster is in use.
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 7 reviews
Sort
Product Reviews
★★★★★ 3
Needs improvements
Color: Light Black, Style: With Headrest
I bought 4 chairs for my table.
Easy to put together.
The arms are too short. They move too much and there is no way to lock the arms in place.
The worse thing is the material used to cover the arms. It is sticky. Each chair has the same problem so I took a pair of socks to cover the arms. So, you should offer custom arm covers and a way to lock the arms.
For the weight allowed the pneumatic support that holds and adjusts the height of the seat holds me quite well.
The wheels stick out beyond the seat circumference so everyday I run into them as I go to sit down but it is a good thing as you can be seated and you are not going to flip over if you bend down from the seat to reach for something on the floor.
The seat itself should be able to accommodate a person of a larger size a big man. It is like you made the chair for little people that weigh a lot (narrow seat, short arms, vs. a large wheel span and powerful the pneumatic pump).
The neck support requires a pillow. Without the pillow my head and neck do not rest on the mesh.
Regarding comfort, I sit in the chair for a lot of time each day. Although it feels a bit hard the seat is fairly comfortable. It would be more comfortable if it were bigger.
I purchased these chairs because of the welcoming way the company describes itself, therefore, I hope they will make some changes to improve the chair. I would not buy them if I had the chance again, not without improvements made. I don't need four more chairs, so, I will live with my purchase. If the chairs already had those improvements my opinion would be different. They may be perfect for someone else of a different body type (and age).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 27, 2025
★★★★★ 5
Finally a Chair That Fits and Feels Great
Color: Black, Style: With Headrest
I recently purchased the Marsail Ergonomic Office Chair, and overall, I couldn’t be happier with it.
First off, assembly was incredibly simple. It took me about 30 minutes from start to finish, and the instructions were clear and easy to follow. All the parts were well packaged, and I didn’t run into any issues putting it together.
For reference, I’m 6'2" and about 275 pounds, and this chair fits me very well. As a bigger guy, finding a chair that feels supportive and appropriately sized can be a challenge, but this one hits the mark. The seat is roomy without feeling oversized, and the overall build feels sturdy and solid.
Comfort-wise, it’s been excellent. I work from home and spend about 8–9 hours a day in this chair, five days a week. The thick cushion seat really makes a difference, it stays comfortable throughout the day and doesn’t feel like it’s flattening out after hours of use. I also really like the mesh back. It provides good support while allowing airflow, which helps keep me cool during long work sessions.
The only feature I wish it had is a recline lock at multiple angles. Currently, it only locks in the fully upright position. It would be great to be able to lock it slightly reclined for more flexibility during long workdays.
That said, for the price, ease of assembly, and all-day comfort, this chair delivers tremendous value. I’m giving the Marsail Ergonomic Office Chair 5 stars and would definitely recommend it to anyone looking for a comfortable, supportive office chair, especially if you’re on the taller or bigger side like me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
This is a terrific office chair at a great price!
Color: Dark Blue, Style: pack of 1
Easy to assemble, with comfortable armrests, lumbar support, and all the functions...it can rock, recline, roll and swivel, plus the seat control easily adjusts up & down, and it comes in a variety of colors. This is my best Amazon purchase ever!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
A Solid, No-Frills Office Chair That Gets the Job Done
Color: Black, Style: pack of 3
I bought the BestOffice Home Office Chair Ergonomic Desk Chair because I needed something affordable and functional for our conference room. I wasn’t looking for anything high-end—just something comfortable enough to get through staff meetings without complaints of sore backs.
Out of the box, assembly was pretty straightforward. It took me about 20–30 minutes, and the instructions were clear enough that I didn’t run into any major issues. Once set up, the chair feels lightweight but stable, and it rolls smoothly across the low pile carpeted office floor.
The mesh back is probably the best feature. It keeps airflow going, which makes a big difference if you sit for long periods or in a warmer environment. I’ve had padded chairs before that trap heat, so this was a noticeable improvement right away.
The lumbar support is decent for the price. It’s not adjustable in a high-end sense, but it does help encourage better posture and reduces that “slouching into the chair” feeling over time. The armrests are basic, but they do the job for light support.
Comfort-wise, it’s good for moderate use. I can sit in it for a few hours at a time without discomfort, but if you’re planning to sit all day every day, you might want something with more padding and customization.
A few drawbacks worth mentioning:
The cushioning is on the firmer side and I worry may wear with extensive use
The chair is more budget-oriented in build quality
Adjustability is somewhat limited compared to higher-end ergonomic chairs
That said, for the price, it delivers exactly what it promises. It’s a simple, functional office chair that covers the basics without overcomplicating things.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
★★★★★ 4
Good chair and great value, comfortable
Color: Dark Black, Style: pack of 1, Color: Dark Black, Style: pack of 1
The chair is as you expect for this price range
The only Issue is the thigh length is shorter then I thought but still works. The air fabric helps
Keeps it cool to sit in for long periods without sweating
It’s a great chair to sit in for 8 hours as I usually do writing and project planning at my desk.
Over all the assembly was simple and all
The instructions were there with the tools as well.
It rolls fine on my vinyl floor. It’s definitely value for your money on this one and the over all design is fine and works to me at this point.
It don’t have squeaky tires so the noise is good rolling around
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026