The Leatt MTB AllMtn 1.0 helmet is one of the brand's cheapest options, though it still packs a useful array of tech for the money. While it fits rather narrow, it’s still a comfortable helmet that offers decent airflow and coverage. It's also pretty light making it a very worthy candidate as one of the best budget helmets on the market. Though its finish is indicative of its price.
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Leatt MTB AllMtn 1.0 helmet - Technical details
The AllMtn 1.0 helmet utilises a polymer compound shell and in-moulded impact-absorbing foam for its construction, which is said to resist small knocks and bumps. It also features a breakaway visor and, while small, it offers three clicks of adjustability.
The benefit of creating a proprietary rotational impact system is that it doesn’t cost as much to build as something like Mips and that’s clear with the AllMtn 1.0. This helmet comes with Leatt’s 360 Turbine tech which is made up of a number (nine in this case) of moving discs that reduce the rotational acceleration to the head by up to 40%, according to the brand.
Also dotted around the helmet are 14 vents, none of which are terribly large but the six vents that run from the front to the top of the head share two MaxiFlow channels cut into the foam. These have been designed with the aim of guiding air over the head and out of the exhaust vents at the back of the lid.
The comfort pads inside the AllMtn 1.0 are moisture-wicking and washable. This helmet weighs in at a very respectable 345g and it's been certified to AS/NZS 2063:2008, EN1078 and CPSC 1203 standards, ensuring the helmet complies with most international (US, UK, EU) safety requirements.
Leatt MTB AllMtn 1.0 helmet - Performance
The medium helmet pictured here is designed to fit heads from 55 to 59cm in circumference. My dome measures in at around 57 to 58cm and the fit is very good with plenty of adjustment to play with. The fit dial on the helmet provides even pressure around the head, resulting in a helmet that’s overall comfortable but stable, even when rattling down the bumpiest of trails.
Popping this helmet on for the first time takes a little bit of getting used to as its fit is rather narrow compared to other helmets. This created just two hotspots around either temple but, for me, it’s only a very light pressure that’s quickly forgotten. I’m a big fan of the strap clips on the AllMtn 1.0 as they offer incredibly easy adjustment. At first, the straps weren’t set up correctly to fit around my ears but thanks to these clips, it took a matter of seconds to arrange the straps to sit comfortably.
On the bike, the airflow that the AllMtn 1.0 encourages was surprisingly good and with the recent cold snap, I’ve even come to think it’s a little too effective. The MaxiFlow channels noticeably guide a breeze over the head and they do their job incredibly well. Though if I were to be scrutinously picky, the helmet would only benefit from larger vents to allow air to escape more efficiently at slower speeds.
I can imagine that people might complain about the amount of foam on show around the helmet’s rim but, for the asking price and the performance on offer, I really don’t mind. You’ll just have to avoid slinging it in the back of the car too heavily post-ride. The visor is also very stubby, so its practicality is very limited but if you’re one for a night ride, it’s small enough to stay well out of the way of any helmet lights without interfering with your eye line.
Leatt MTB AllMtn 1.0 helmet - Verdict
It’s really tough to knock the Leatt MTB AllMtn 1.0 helmet, especially at this price. Other helmets to look at in this price range are the Lazer Chiru Mips, now priced at £65 but its visor isn’t adjustable and I’ll admit, it’s not the coolest-looking helmet about.
There’s also the Specialized Camber that’s priced equally at £70. While it’s an excellent hat, it lacks an adjustable visor and its coverage isn’t quite as comprehensive as the Leatt’s. It skimps on comfort padding too but the Camber’s outer shell does wrap around the helmet’s rim, so it’ll be more durable.
The combination of the Leatt MTB AllMtn 1.0s airflow, comfort, and lightweight firmly makes it one of the best helmets you can buy at its price point, without question. Though it would be wise to check the fit, as it’s a smidge narrow around the temples.