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Mips in bike helmets, explained briefly
You'll come across Mips as an extra on some bike helmets. Put simply, a part inside the helmet can move slightly in certain angled impacts. This is designed to help reduce rotational motion. When you're choosing, treat Mips as one feature alongside size, fit and comfort.
For you, that means: first check whether the helmet is made for your rides, falls within your size range and feels comfortable. Only then compare Mips and other features. Mips doesn't replace a helmet that fits or properly fastened straps.
Why angled impacts matter
An impact doesn't always hit a helmet straight on. With angled contact, a rotational movement can occur alongside the straight movement. The Mips system was developed as an additional design solution for exactly this part of the movement.
This doesn't mean every fall plays out the same way or that you can predict a particular outcome. Speed, impact angle, surface and other factors vary from one situation to the next. So think of Mips as an extra helmet feature, not as a promise for every accident.
How does Mips work?
Depending on the model, a low-friction element is built into the helmet's construction. In certain angled impacts, it is designed to allow a small relative movement. The helmet can then move slightly in relation to the head. The manufacturer explains how the Mips safety system works in more detail.
How the system is built into a helmet can vary by model and size. It is integrated during manufacturing and isn't meant to be retrofitted to an existing helmet. As a buyer, you should go by the product information for the specific model.
Mips is not an adjustment system in its own right, and it isn't a helmet size. With a Mips model, too, you choose the size by the stated centimetre range and then check that the helmet sits comfortably and stably.
How can you tell if a helmet has Mips?
Not every bike helmet has Mips. This applies within a single brand too, so check the current product page to see whether the model you want comes with the system. Labels on the helmet and the packaging can also help you tell.
A visible yellow inner layer isn't a general rule. Depending on the design, the low-friction element can look different or be built into the comfort padding. So don't rely on the colour inside the helmet alone.
Apart from Mips, models differ in areas such as size range, ventilation, buckle and adjustment system. Only compare the features that are listed for each model.
What the Mips label doesn't tell you
The label “with Mips” answers just one question about features. It doesn't tell you which size range fits your head, what kind of riding a model is made for or how the buckle, ventilation and adjustment differ. You'll find those details separately on the product page.
There's no one answer for how a helmet feels to wear, either. Two helmets with Mips can fit differently because they are different models. Likewise, don't draw conclusions about comfort, weight or fit from a visible inner layer. Pick suitable models first and then look at each one as a whole. That way Mips becomes a clearly defined feature that doesn't overshadow your other buying criteria.
How to weigh up Mips when buying a helmet
A good choice doesn't start with a single feature. This order helps you compare several models in a sensible way:
1. Decide on your type of riding
First think about where you'll wear the helmet most. Everyday riding, e-biking, sporty tours or off-road rides can place different demands on shape and features. Start with models made for the riding you do most.
2. Check the size range
Measure your head circumference and compare it with the centimetre range of the model you want. S, M, L and XL aren't standard across models. The KED bike helmet size guide shows you how to measure step by step.
3. Compare features
Next, check which of the suitable models come with Mips and what other features they offer. Look at the details on adjustment, buckle, ventilation and anything else that matters on your rides. Mips is one extra point in your overall decision.
4. Check the fit
Put the helmet on centred and level. It should sit snugly and stay stable without causing pressure points. Close the straps so they sit close. If the helmet slips when you move normally or feels uncomfortable, check the size and adjustment again or try a different model.
An adjustment system is there to fine-tune the fit within the intended size range. It can't make up for a helmet shell that doesn't fit. So take as much time trying the helmet on as you do comparing features.
Conclusion: see Mips as an extra feature
Mips is developed for certain angled impacts and complements the rest of the helmet's construction. For your decision, the whole picture counts: the helmet needs to suit your rides, be in the right size range, sit comfortably and stably and offer the features you need.
