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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
4.4 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Nice, quiet and durable mouse
Color: Black and Gold
After trying several mice, I purchased one of these. It is small and very quiet. Since I spend many hours a day at a computer that can be rough on mice. I have since purchased more of these. It will take the average user quite a while to wear one out. And they are inexpensive.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Incredible Precision and Comfort for Gaming and Design
Size: Standard, Size: Standard
After using this mouse for a couple of weeks, it just confirmed again why I’m such a fan of Razer products. The ergonomics are excellent, and it feels surprisingly lightweight considering it uses a AA battery. The low latency with Hyperspeed technology is fantastic, and the sensor precision is seriously impressive. I spend hours playing Fortnite and the connection has been completely reliable the whole time. I’m also a designer, so I need accuracy for detailed work in Illustrator, and this mouse has performed perfectly for both gaming and professional use. Definitely one of the best wireless mice I’ve used.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Excellent Wireless Mouse with Great Performance
Size: Standard
The Razer Basilisk V3 X HyperSpeed is an outstanding gaming mouse. The wireless connection is fast and reliable with no noticeable lag, and the mechanical switches feel crisp and responsive. It’s comfortable to hold even during long sessions, and the customizable buttons add a lot of flexibility for both gaming and productivity. Battery life is impressive, and overall it delivers great performance for the price.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Great mid range mouse option
Size: Standard
My previous mice include the Razer Deathadder V2, Razer Basilisk V2 X Hyperspeed, and the Logitech Pro X Superlight.
This is easily the most comfortable mouse I've used, the contours feel perfect and the extra button the side is well placed and feels like a natural addition. I've personally not found the weight an issue, though it is much heavier that most other mice, even ones that use a AA battery. I do prefer the external battery as I disliked having to plug in my mouse every so often to charge it, something that became much more frequent as the internal battery lost capacity.
The new switches feel excellent, a noticeable improvement from the V2. Performance is good in all areas with the exception of the scroll wheel, which feels like it eats inputs for breakfast lunch and dinner. Basically when scrolling fast the Basilisk V3 seems to skip inputs. My V2 had similar issues and eventually I had to replace it when the scroll wheel started acting haywire and scrolling on its own or backwards. Something to keep an eye on.
Appearance is unremarkable. The new RGB scroll wheel is appreciated, but fairly simple in customization. I have it set to static color but you can have it be reactive to clicking, color cycle, breathing, or a few other options with Razer Synapse.
One small quirk is that if you have auto sleep on, it takes a bit to actually turn back on when using it again. Whereas the Razer Deathadder V2 was near instant in my experience, the Basilisk V3 takes a few seconds to get going, which sounds like nothing but does make a difference when it happens so often.
TL;DR - It's a really good mouse at this price point, good performance and great comfort. Only negative is the scroll wheel and the weight if that matters to you.
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Reviewed in the United States on October 24, 2024
★★★★★ 4
Not as good as a 3S, but less expensive. Hopefully better quality switches than the 3S.
Size: Standard
I like this mouse, but it could be better. I purchased it to replace a Logitech MX-Master 3S, which is a great mouse except the microswitch for the left button stopped being reliable after less than three years. While that's a reasonable life for some users, perhaps, it seemed inadequate to me. My use case is general pc use for searching the web, writing emails, and managing finances. The Logitech wasn't used every day.
The 3S has a higher palm hump, which the Basilisk lacks and I really prefer. The Basilisk is similar in overall size to the 3S, so for the most part it fits my hand sufficiently well. Hump size is the main downside to the Basilisk. That, plus the battery is not rechargeable. What, in 2026?! But I've adapted to it, and battery life so far has been very good. It has the combo BT + 2.4 gHz connectivity with a dongle. Both choices work very well and reliably. I like the center wheel size and action a lot. I like the slip pads on the bottom of the mouse. It has a very handy and perfectly responsive third thumb button that I don't currently use but gamers may find it useful. Only time will tell if Razer's microswitch quality is more durable, reliable, and longer lived than the crap switches Logitech put into the otherwise very good 3S. I have used the Basilisk about two months at the time of this review.
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Reviewed in the United States on May 1, 2026