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Sweet Protection Ascender Mips Helmet


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Ascender Mips Helmet

Sweet Protection's lightest, most packable helmet to date, the Ascender MIPS Helmet is specifically designed for ski mountaineering—with plenty of features for the climb and the descent. This low-profile helmet doesn't sacrifice performance for weight. Instead it uses Advanced Hybrid Variable Elasticity shell technology to transfer the impact in critical zones, while dual-density EPS foam optimizes impact performance specifically for the area and MIPS technology reduces the rotational force transferred to your head in a crash. The Ascender is triple-certified and weighs in at under a pound.
  • Low-profile helmet specialized for ski mountaineering
  • Advanced Hybrid shell transfers the impact
  • Dual-density EPS foam optimizes impact performance by area
  • MIPS technology reduces transfer of rotational forces
  • Weighs less than a pound for packability
  • Item #SET0059

Shell Material
Advanced Hybrid
Impact Foam
dual density EPS
108( penetration proof)
Fit Adjustment
wide split divider
CE EN 1077 Class B, ASTM 2040, EN 12492
Claimed Weight
Recommended Use
ski mountaineering
Manufacturer Warranty
2 years

Tech Specs

What do you think about this product?


>Rating: 3

Well reviewed, not for me

I returned this product before using it
True to size
Size Bought
5` 7"
145 lbs

I purchased this helmet for ski mountaineering and backcountry skiing based on the positive review in Backcountry Magazine. I decided to return it unused for a few reasons. 1. Although it provides MIPS protection it weighs about the same as better insulated helmets. 2. I found it difficult to manage goggles as the back half of the helmet doesn't come down very far. I usually don't tour with the helmet on, but put it on when descending or if there are rock fall concerns - so ultimately having extra insulation was something I realized I wanted

>Rating: 5

Amazing Helmet

I've put it through the wringer
True to size
Size Bought
5` 8"
150 lbs

I am sorry the previous reader had a negative experience with this helmet. Please know its truly is a revolutionary helmet. Also, please know I don’t have a horse in this race. But I am an industry expert, a ski area manager, ski patrol, and an alpine ski coach. What the previous reviewer was referring to in their opening comment, the four attachment points, that’s the heart of the MIPS system. The plastic layer connected by four points, provides slide, rather than grip, if our fragile melons take a hit. By reducing grip and intruding slide, the helmet essentially prevents whip-lash type forces from injury to the brain. (i.e MIPS disperses the rotational force from reaching our brains directly). Anyway, I happen to love this helmet. It’s light and it works great for its intended purpose. That said, everyone’s head is different, so what might fit some might not work for the next...Happy hunting.

>Rating: 2

Great, in theory

I returned this product before using it

I wanted to love this helmet, I really did... but I just couldn't. The helmet was too uncomfortable to wear, and I didn't even have it on longer than 5 minutes at a time. First off, the helmet comes with this strange piece of plastic that the inner foam insert attaches to, and the inner piece of plastic is held on by four little rubber pieces. Without swapping out the default foam insert with the included thicker foam insert, I couldn't even stand to wear the helmet due to those little rubber pieces "stabbing" my head. This got better with swapping out the foam insert with the included thicker insert. That said, I took the plastic piece off to check it out and it was damn near impossible to get back in. If one of those thin, flimsy rubber pieces broke while I was on a serious mountaineering quest, the helmet would become loosing/annoying and it would be impossible to clip that back on in the field. In addition to the strange little rubber pieces that hold the inner plastic liner, the adjustment piece at the bottom back helmet to loosen/tighten the helmet was terribly uncomfortable when looking up while the helmet was nice and snugged down. And you know what you do when you're skiing in the backcountry and/or climbing a mountain? You look up, a lot!! The helmet looks cool, and is decently light I guess, but I wouldn't recommend this product at all to anyone that would ever plan on using it without some kind of head buff/beanie etc. I think the Salomon S lab MTN helmet is a better choice - 2 oz lighter, more comfortable, even looks better, and it's cheaper.

Thanks for the great review Ross!


Another question, in the pictures shown above for this helmet, it shows two different kinds of occipital straps (the one that rests on the back of the head.) One is fabric, the other seems to be some sort of twist-tighten device. Which one does it actually come with?


I am not familiar with all the certification codes listed for this helmet. Could this helmet be used for rock climbing as well? I assume so, but maybe not? Anyone know more?

Hey Kayd! Great question. It's confusing business. The CE EN 1077 Class B means that it meets the required standard for ski/snowboard helmets. Class A helmets offer more protection of the neck and ears. Class B has less surface area protection. Since this helmet does not cover your neck or ears it is Class B. EN is the European standard. The ASTM is the American standard for the same non-motorized snow-sports test. EN 12492 is the European standard for mountaineering/impact protection. This specific certification means that it does protect against blunt impact and would be fine for use in mountaineering/climbing. This article does a great job describing the test methods and is a very quick read: