If you've been researching high back booster seats for an older child, there's a decent chance the BeSafe Flex Fix 2 has cropped up in your searches. And with good reason. BeSafe are a Norwegian brand with a well-earned reputation for building seats that go well beyond minimum safety requirements — and the Flex Fix 2 is no exception.
This review covers everything you need to know: what it is, how it installs, what makes it stand out, and whether it's the right choice for your family. We'll also touch on how it sits alongside the broader extended rear-facing car seat range we stock at Saunders & Smalls, and how our Smalls Install Plus fitting service can help you get it installed correctly.
What Is the BeSafe Flex Fix 2?
The BeSafe Flex Fix 2 is a high back booster seat. For full details on how it is classified, how the child is restrained, and how it relates to BeSafe's wider product range, we'd recommend checking directly with BeSafe or confirming with your retailer, as product specifications and classification details can be updated over time.
What BeSafe do describe is an innovative modular protection system designed to deliver maximum safety for this stage of travel.
For the seat's current regulatory approval status, we'd likewise recommend checking directly with BeSafe or confirming with your retailer, as certification details can be updated.
Worth knowing: Always check that both the seat and your specific car are listed as compatible — particularly for ISOFIX-equipped seats.
Key Features of the BeSafe Flex Fix 2
BeSafe have clearly put a lot of thought into the Flex Fix 2. Here's what stands out:
Modular Protection System
The headline feature. The Flex Fix 2 uses a modular approach to side-impact protection, meaning the protective elements can be adjusted or configured to suit your child's size and your car's interior. This is a meaningful upgrade over more basic high back boosters, which offer fixed (and often minimal) side-impact coverage.
Installation
For full details on how the Flex Fix 2 installs — including whether ISOFIX is used and how the anchoring system works — we'd recommend checking the current specifications directly with BeSafe or asking your retailer. Installation specs are product-specific and worth confirming before you buy.
Seatbelt Routing and Fit
As with all high back boosters, the child's safety depends heavily on the seatbelt sitting in the correct position across the chest and hips. The Flex Fix 2 is designed to guide the belt into the right position, reducing the chance of a poorly routed belt — one of the most common car seat mistakes parents make.
Adjustability
The seat offers good adjustability to grow with your child. For current specifications on height and weight limits, we'd always recommend checking directly with BeSafe or getting in touch with us — specs can be updated and we want to make sure you're working from the most accurate information.
Real-World Fit in UK Family Cars
One of the most common questions we get asked about any seat is: "Will it fit in my car?"
For the BeSafe Flex Fix 2, if the seat uses ISOFIX it will require compatible anchor points — always worth double-checking for your specific vehicle, particularly for older cars. We'd encourage you to verify the installation requirements directly with BeSafe or your retailer before purchasing.
In terms of physical footprint, BeSafe's Flex Fix range has generally worked well in a variety of car sizes — including more compact family cars that are common on UK roads. That said, the modular side-impact elements do add some width, so if you're trying to fit three seats across the back row of a smaller car, it's worth checking the specific dimensions carefully.
If you drive something on the smaller side — a Ford Fiesta, VW Polo, Vauxhall Corsa, or similar — we'd encourage you to get in touch before purchasing. Getting the seat choice right for your car is something we take seriously, and it's exactly the kind of thing we help with through our Smalls Install Plus service. It's also worth thinking carefully about which position in the car is best for a rear-facing seat if you're juggling multiple seats across the back row.
Our advice: Never assume a seat will fit based on photos alone. Seat depth, ISOFIX point position, and headrest height all vary significantly between car models — and even between variants of the same model.
How Does It Compare to the Axkid Minikid 4?
We're often asked to compare the BeSafe Flex Fix 2 to seats like the Axkid Minikid 4. It's worth clarifying upfront that these are actually different types of seat — the Minikid 4 is an extended rear-facing seat, while the Flex Fix 2 is designed for a different stage of a child's car seat journey. For full details on exactly how the Flex Fix 2 is classified and specified, we'd recommend checking directly with BeSafe.
If your child is still within the limits for rear-facing travel, we'd always encourage you to keep them rear-facing for as long as possible. Organisations such as Which? and road safety bodies publish guidance on the safety benefits of rear-facing travel for young children — our guide to how long children should stay rear-facing is a good starting point if you'd like to understand more. If you're currently in the market for an extended rear-facing seat, our Axkid Minikid Core review gives a thorough look at one of the most popular options we stock.
That said, there comes a point where every child will move to a forward-facing booster, and when that time comes, the BeSafe Flex Fix 2 is a serious, safety-focused option that reflects BeSafe's commitment to going beyond the minimum.
Swedish Plus Test: Does the Flex Fix 2 Pass?
The Swedish Plus Test is a voluntary additional safety test. For details on what it involves, how it relates to other regulatory standards, and which seats currently hold approval, we'd recommend checking with an authoritative source such as Which? or contacting BeSafe directly — certification status can change over time.
What we can say is that if Swedish Plus Test approval is important to your decision-making, it's always worth verifying the current status directly with the manufacturer rather than relying on third-party listings, as these may not reflect the most up-to-date position.
Is the BeSafe Flex Fix 2 Right for Your Family?
The BeSafe Flex Fix 2 is a well-engineered, safety-led high back booster seat that reflects everything we'd expect from BeSafe. If your child has outgrown rear-facing travel and you're looking for a forward-facing booster that takes safety seriously — rather than just ticking a regulatory box — this seat deserves serious consideration.
It's particularly well suited to families who:
- Have a child who has genuinely reached the limits of their rear-facing seat
- Want a booster with proper side-impact protection
- Value a brand with a strong safety pedigree and clear product upgrade path
What to Do Next
If you'd like to find out whether the BeSafe Flex Fix 2 is the right fit for your child and your car, we're here to help.
Based in or near Somerset? You can book an appointment through our Smalls Install Plus fitting service — we'll check compatibility, walk you through installation, and make sure the seat is fitted correctly before you drive away.
Outside Somerset? Get in touch with us directly and we'll discuss the best options for you — whether that's helping you choose the right seat or pointing you towards a trusted fitting resource in your area.
If you're looking for a BeSafe seat at an earlier stage of your child's journey, our BeSafe Stretch review is worth a read.
Browse the full BeSafe range at Saunders & Smalls or contact us with any questions. We're always happy to talk car seats.
