Miniuno TripiieFix R129 Car Seat
Miniuno TripiieFix R129 Car Seat
Miniuno TripiieFix R129 Car Seat
Miniuno TripiieFix R129 Car Seat

Miniuno TripiieFix R129 Car Seat

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 SKU: CT1929

Miniuno TripiieFix R129 Car Seat

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 SKU: CT1929
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Rated 5.0 out of 5
Fantastic car seat for my 5-year-old's school runs. Easy ISOFIX installation in our Volvo, and the padding is so comfortable for longer Peak District trips. The headrest adjusts perfectly as he grows, and the side impact protection gives great peace of mind.
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Miniuno TripiieFix R129 Car Seat: The Perfect Next Stage Car Seat


Transform your child's everyday journeys with the Miniuno TripiieFix, the ideal next-stage car seat designed specifically for children from 100-150cm (approximately 4-12 years). Combining advanced safety features with practical comfort, this i-Size certified car seat is perfect for busy families on the go.


Advanced Safety Features



  • i-Size (R129) certified for enhanced protection

  • Superior side impact protection system

  • Secure ISOFIX connection points

  • Energy-absorbing materials throughout

  • Safe belt routing indicators


Smart Design for Growing Children



  • 8-position height-adjustable headrest

  • Ergonomic padded armrests

  • Wide, comfortable seating area

  • Deep-padded, breathable fabrics

  • Curved design for optimal posture support


Easy Installation & Daily Use


The TripiieFix features a straightforward installation system combining ISOFIX anchors for stability with your vehicle's 3-point seat belt. Clear belt guides ensure correct positioning every time, making it perfect for:



  • Daily school runs

  • Multiple car transfers

  • Carpooling arrangements

  • Family vehicles

  • Growing children


Technical Specifications



  • Height Range: 100-150cm

  • Approximate Age: 4-12 years

  • Installation: ISOFIX + vehicle seat belt

  • Safety Certification: R129 (i-Size)

  • Orientation: Forward-facing only

  • Headrest Positions: 8

  • Seat Belt Type: Vehicle 3-point belt


Comfort & Convenience



  • Premium breathable fabrics

  • Easy-clean surfaces

  • Removable cover for washing

  • Lightweight for easy transfer

  • Compact design


Safety Assurance


Every TripiieFix undergoes rigorous testing to exceed the latest European safety standards. The combination of ISOFIX stability and proper belt positioning ensures your child travels safely at every stage of growth.


Perfect For



  • Children transitioning from toddler seats

  • School-age children from 4-12 years

  • Families needing a reliable booster seat

  • Cars with ISOFIX points

  • Daily school runs and longer journeys


Care Instructions



  • Cover is machine washable at 30°C

  • Plastic parts can be cleaned with mild soap

  • Regular checks of ISOFIX connections recommended

  • Periodic adjustment of headrest as child grows


Installation Requirements



  • Vehicle must have ISOFIX points

  • 3-point vehicle seat belt required

  • Compatible with most modern vehicles

  • Check vehicle compatibility list for confirmation


In The Box



  • Miniuno TripiieFix R129 Car Seat

  • User Manual

  • Installation Guide

  • Vehicle Compatibility List


Additional Information



  • 2-year manufacturer warranty

  • Safety tested beyond EU standards

  • Regular safety check service available

  • Replacement covers available separately


Experience safe and comfortable journeys with the Miniuno TripiieFix R129 Car Seat, where advanced safety meets practical design for growing families.


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Orders typically take between 2-3 business days to arrive. Please note that shipping times may vary depending on your location.

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Order Value under £50

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Please note that shipping rates may vary depending on your location. If you have any questions or concerns, feel free to contact us!

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Miniuno TripiieFix R129 Car Seat FAQs

Your child should be at least 100cm tall (typically around 4 years) before using the TripiieFix. Always check both height and that your child can sit properly with the vehicle's seat belt correctly positioned across their shoulder before transitioning.

The TripiieFix uses a combination of ISOFIX connectors for stability and your car's 3-point seat belt to secure your child. This dual system provides excellent security while being simple to use daily. The ISOFIX points keep the seat firmly in place even when unoccupied.

While the TripiieFix is designed primarily for ISOFIX installation, it can be installed using just your vehicle's seat belt if necessary. However, using the ISOFIX connections provides additional stability.

The TripiieFix features 8 headrest positions. The correct position is when the headrest ensures the vehicle's seat belt sits comfortably across your child's shoulder, not their neck or too low on their arm. The easy adjustment mechanism makes it simple to find the perfect position.

Yes, the TripiieFix is designed for comfort on both short and long trips. The deep padding, breathable fabrics, and ergonomic armrests make it comfortable for daily use. The wider seating area gives growing children plenty of space, while the curved design helps maintain good posture.
Miniuno Logo

Miniuno baby products offers parents both reliability and style, ensuring your little one’s safety and comfort on every journey. Miniuno, part of the Casa Tomara group, has been bringing top-quality nursery brands to the UK market since 1975.

With a diverse range of Miniuno car seats, strollers, travel systems, and more, every product meets the highest safety standards, including Isofix compatibility and R129 regulations.

Whether you’re looking for a compact stroller for city life or a multi-functional Miniuno car seat that grows with your child, Miniuno’s innovative designs make parenting easier. Explore our collection and discover why parents trust

Miniuno strollers and booster seats for safe, practical solutions that support modern family life.

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