The Sweet Protection Fluxer Mips Helmet is the brand’s maximum ventilation option, designed for road use. As you would hope, the ventilation is excellent, backed up by a good retention and adjustment system. Its focus on protection rather than minimum weight does make it a little heavier than some alternatives, but not enough to make it feel uncomfortable.
Sweet Protection Fluxer Mips – Features
The Fluxer is available in four different colour options: the white version tested here, plus black, light lilac and bronco white (grey).
Each colour is available in three sizes: S/M to suit 53–56cm, M/L for 56–59cm and L/XL for 59–61cm. While the range of sizes is good, starting at 53cm will rule it out for some people.















The retention system works similarly to many others, with a rotational dial at the rear, and there is also a three-point height adjustment for the cradle position.
As you would expect from the brand name, protection is a key aspect and the helmet features the Mips Air Node rotational protection system. The helmet meets and exceeds the two main standards, CPSC 1203 and EN1078.

Inside the foam, the Mips Air Node system can be removed completely. It is attached using Velcro tabs. There is also an additional comfort pad secured on top of the Mips Air Node system which is also removable.
The helmet is ponytail-compatible and features large ventilation channels that also double as eyewear grippers. These are designed to work with Sweet Protection branded eyewear, but I found they worked well with other brands as well.
Sweet Protection Fluxer Mips – Performance
It’s simple to find the right fit, with rotational diameter adjustment and notched vertical adjustment.
I have a head diameter of 56cm, which means I should, in theory, fit either the S/M or M/L options. Despite being at the lower limit of the M/L size, there was still plenty of adjustment remaining. This gives leeway for anyone who prefers a more tightly secured fit, or who is unsure when choosing between sizes. Going up a size also leaves more room for extra headwear in colder weather.

The padding is very comfortable, while the low profile straps are minimally intrusive and barely noticeable while riding. You can’t adjust the angle of the straps or the height of the point where the ear strap joins, but I never felt the need to change their positions.
The under-chin strap is easy to connect and can be adjusted and tightened easily, with two firmly held tabs keeping the excess strap in place.

Ventilation is the key part of the design, so it was good to feel just how well it works, even at low speeds. Airflow can be felt immediately as it flows over the head.
As your effort level increases, the padding does eventually become overwhelmed with sweat and will start to drip, but no more than with other similarly well-ventilated helmets. There is no mention of aerodynamic performance, and Sweet Protection makes other helmets geared towards this should that be your focus.

The combination of the large ventilation channels and the areas where the helmet sits against the head does result in some considerable ‘helmet hair’ after riding. It’s hardly a performance issue, but if you are particularly concerned about looking presentable after a ride, it is something to consider.
The Fluxer has gripper sections just inside the front outer air channels. I used several brands of eyewear, and all were easy to place because of the well-positioned and well-sized channels. They also stayed securely in place.

I did find that some models of eyewear models – specifically those with a broad upper section – slightly interfered with the helmet. The Fluxer has a slightly broader front section than some more minimal helmets, and this can also reduce the ventilation reaching the face through the glasses. This isn’t really a negative of the helmet, but is something to be aware of – particularly if you prefer this kind of eyewear.
The M/L size helmet weighed 295g (285g is the claimed weight of the S/M), which isn’t particularly heavy compared with general road helmet designs, especially those focused on protection with Mips rotational protection.

One of the lightest alternatives I have used is the Abus Airbreaker, which weighed just 213g. While this is also well ventilated and very comfortable, it lacks Mips, but does meet the other main minimum standards.
Sweet Protection Fluxer Mips – Conclusion
The Fluxer Mips is £179.99, which is competitive against rival options. The aforementioned Abus Airbreaker – one of the few helmets I have used offering such good ventilation – retails for £225, although some sizes and colours can be found for less.
Other well-known alternatives include the Giro Aries Spherical at £299.99 and Lazer Z1 Kineticore for £229.99.

Overall, the Fluxer Mips offers excellent ventilation and a comfortable, secure fit and it includes Mips rotational protection without becoming excessively heavy. The adjustment range is good, the ventilation channels work well with a range of eyewear, and the £179.99 price makes it competitive with several established alternatives.
It isn’t one of the lightest road helmets available, and some larger-profile eyewear can interfere slightly with the front of the helmet, but for riders prioritising ventilation and protection over outright minimum weight, it is a very capable option.
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Test Report
What does the manufacturer say about this product?:
We’ve created the Fluxer Mips Helmet so you can enjoy long rides and steep climbs without being beat by the heat. This helmet strikes the perfect balance in lightweight, highly ventilated and extremely comfortable design for the style conscious and serious cyclists. Equipped with multiple large vents strategically placed for maximum airflow, and our unique STACC ventilation system ensures that you stay cool and comfortable even on the hottest rides. The advanced construction with perpendicular ribs throughout the interior of the helmet provide added impact protection.
This helmet is equipped with the Mips® Air Node technology where the low friction layer is laminated to the comfort padding providing exceptional comfort and reduces rotational forces to the brain. The integrated 360 Occigrip Fit system ensures that the helmet fits snugly and securely on your head and allows for on-the-fly height adjustment. The helmet is designed to integrate seamlessly with Sweet Protection eyewear, including eyewear grippers to keep your shades securely in place when stored on the helmet.
Tell us some more about the technical aspects of this product:
Extremely well vented with multiple large vents
STACC ventilation system ensures that you stay cool and comfortable even on the hottest rides
Perpendicular ribs between vents for impact protection
Mips® Air Node to help reduce rotational motion to the head in certain angled impacts, thereby lowering the risk of concussions and brain injury
Vastly improved fit
New integrated 360 Occigrip Fit System with on-the-fly height adjustment
Pony-tail compatible
Especially designed to integrate well with Sweet Protection eyewear
Eyewear Grippers allow you to fasten your sport performance eyewear on the front of your helmet
Detachable front comfort pad
Will meet and exceed both the CPSC 1203 and EN1078 standards (double certification)
Any further comments on quality?:
Excellent clean finish with good strap construction and neat colour finish where it meets the main foam construction.
Any further comments on performance?:
If you are looking for a well-ventilated helmet, this does the job very well.
How does the price compare to that of similar products in the market, including ones recently tested?:
While not cheap, other premium options are more expensive. MET Trenta MIPS is £229.99, Fizik Kudo is £269.99, and the Rudy Project Rebel is £270. One exception is the Van Rysel RCR MIPS at £79.99.
What protection standards does the helmet conform to?:
Will meet and exceed both the CPSC 1203 and EN1078 standards (double certification).
Does the helmet incorporate any rotational injury protection? If so, what?:
Mips® Air Node
Any further comments about fit?:
I am between sizes, at 56cm. I found the M/L comfortable, and there is still enough movement in the fit system to make it smaller. I was not able to try the size small and compare the shell sizes.
Does the helmet size up especially big, or small?:
It sizes up correctly. Although for those on the limit or between sizes, as I am, I would go up rather than down. The smallest recommended head size is 53cm.
Any further comments about the retention system?:
Simple, easy to use and a good range both up and down, and also the diameter.
Any further comments about ventilation?:
Superb. Noticeable at slower speeds as well.
Does the manufacturer make any specific aero claims about the helmet?:
No
Is the helmet easy to care for? Are the pads removable and washable?:
Simple to remove the pad as one main piece. It is attached with Velcro.
Any issues with durability?:
No concerns. The straps are well made and have solid connections. The padding is removable to wash, with Velcro holding it in place.
Did you enjoy using the product? Yes
Would you consider buying the product?
Yes, if I were looking for ventilation over aero-design.
Would you recommend the product to a friend? Yes
Use this box to explain your overall score
Combines excellent ventilation, a comfortable fit and good adjustment with the added reassurance of Mips rotational protection. It isn’t the lightest option available, and some eyewear can interfere with the front of the helmet, but these are relatively minor compromises for an otherwise very capable road helmet.
About the tester
Age: 42Height: 168cmWeight: 61kg
I usually ride: Road / Gravel / MTBMy best bike is: Cannondale SystemSix (road)
I’ve been riding for: Over 20 yearsI ride: Every dayI would class myself as: Semi-pro or ex-pro
I regularly do the following types of riding: Cyclocross, Gravel riding, Indoor riding, Bikepacking, Audax, Mountain bike XC



