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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
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Description
maxi cosi 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
4.0 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 4
Awesome, portable room divider for larger rooms
Color: Black, Color: Black
I chose this room divider to use in my son's room that also serves as my home office! It is 72" x 72" in size, so it truly blocks out the other side of the room for optimal privacy. Once it's assembled, it's mildly sturdy - as long as you can bet both ends with the "feet" in line with the ground. I wish that the framework poles had more of an interlocking system so that the divider was easier to erect. I assembled this on carpet, so I had some issues getting the divider to stop moving. It takes a lot of work to set up, as it is massive, so definitely have someone help you. I would suggest adding weights of some sort to the feet of this divider to keep it from shifting. I ended up leaning mine against a bookcase shelf so it wouldn't lean. All and all, this is a great product if you are looking to make a room multipurpose.
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Reviewed in the United States on August 2, 2025
★★★★★ 5
As described
Color: Black
Light weight, easy to put together and you can disconnect the ends and just roll the whole thing nice and tight for quick out of the way storage. Pretty sturdy, doesn't fall over if you bump into it, you could use it outside but if there's a lot of light you can see through a tiny bit if you're really close but I only tested this indoors so not sure about patio types
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Reviewed in the United States on December 18, 2025
★★★★★ 2
Flimsy - choose something else
Color: Black
Very flimsy and barely stands up… better options out there.
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Reviewed in the United States on October 11, 2025
★★★★★ 5
Versatile Room Divider With Easy Assembly and Strong Coverage
Size: 3 Panel 12FT W
I picked up this Siebwin 3-panel folding room divider mainly for privacy and room separation, and overall it works very well.
Assembly is very straightforward, and the divider can be set up, taken apart, and stored without much effort. The fabric quality feels good, and the frame construction is stronger and more stable than expected. The support tubes especially feel well built and help keep the divider standing securely.
One feature I really liked is the flexibility of the design. The panels can be used together as a complete divider or separated depending on the setup and available space. That makes it much more versatile for different room layouts or temporary privacy needs.
The coverage is also very good, and the size matches the manufacturer’s description accurately. The fabric blocks light and background visibility well enough to provide solid privacy without feeling overly heavy. The wider feet also help improve stability compared to thinner folding dividers.
Another positive detail is that everything arrived complete with no missing parts or damaged pieces, which made assembly much easier and faster.
Compared to cheaper privacy screens, this one feels more durable and easier to customize depending on the situation. In terms of value for the money, it feels like a very practical and worthwhile purchase considering the size, flexibility, and build quality.
Overall, a versatile and well-built room divider with easy assembly, strong privacy coverage, stable construction, complete included parts, flexible panel configuration, and excellent everyday functionality.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Stable, flexible in deployment configuration, creates true privacy and looks great.
Size: 3 Panel 12FT W
This is the second room divider panel I have installed, and there are several features about this one that I like much better than my older one.
The fact that there are no gaps and that the material is thicker means you get more privacy or more hiding power, if you wish. My older divider has vertical spaces between each of the panels and the panels are half as wide as the Siebwin panels, so there are many vertical spaces. The Siebwin divider really creates privacy.
Another feature that I really appreciate is that the legs are wider and stand off from the floor. On my older one the legs are flat and they're rather awkward to adjust because they create more drag on the floor. The feet on the older one also loosen if you turn them counter clockwise, so adjustments of configuration that require the feet to be moved are more complex.
The older divider also must be deployed in a zig-zag fashion because he feet are not as wide, but this new one can be deployed and stable in a straight, an "N" shape or an arc. They are both the same length, but because the older one must be use in a zig-zag deployment it doesn't reach to the length of the new one.
The Siebwin divider definitely costs more at $103.48, but it sports several features and advantages over the other brand, so it does a better job and is worth the extra cost.
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Reviewed in the United States on May 25, 2026
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