REASONS TO BUY
Reasonably affordable
Durable
Easily adjustable
REASONS TO AVOID
Fairly heavy
Not well ventilated
Adjustment wheel can pop off
Mammut Skywalker 3.0 Review
A simple plastic helmet that's easily adjustable and incredibly durable
The Mammut Skywalker 3.0 is your basic rental helmet: affordable, adjustable, and durable, but nothing more.
Credit: Dom Rickicki
By Dom Rickicki ⋅ Review Editor ⋅ November 3, 2026
RELATED: The Best Climbing Helmet
Our Verdict
The Mammut Skywalker 3.0 is a simple hardshell helmet for anyone seeking an affordable, durable option. Like other entry-level helmets, it's hugely adjustable – almost anyone can pick this helmet up, and it will fit them easily. The hard-shell plastic makes it super durable, but added durability also adds weight. Considering the price – especially compared to more modern designs at the same price point – it's tough to recommend this helmet over others. However, because of its adjustability and durability, it's a very reasonable choice for guide services looking for a helmet for a rental fleet.
Compare to Similar Products
 This Product
Mammut Skywalker 3.0 | |||||
|---|---|---|---|---|---|
| Awards |  Best Bang for the Buck | ||||
| Price | $80 List Check Price at REI | $65 List Check Price at REI | $75 List Check Price at REI | $90 List Check REI (on sale!) | $70 List Check Price at REI |
Overall Score  |
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| Star Rating | |||||
| Bottom Line | An affordably priced hardshell helmet that's reasonable as a rental, but a bit outdated for individual climbers | A modern, lightweight helmet that costs nearly half as much as the competition | A modern hardshell helmet that is rugged and durable without sacrificing ventilation | A durable, modern hardshell helmet for a reasonable price, but for that price, there are better options on the market | A very popular, albeit clunky, helmet at an unbeatable price point |
| Rating Categories | Mammut Skywalker 3.0 | Metolius Hardtop | Petzl Boreo | Black Diamond Capitan E | Black Diamond Half Dome |
| Comfort (30%) | |||||
| Adjustability (20%) | |||||
| Weight (20%) | |||||
| Ventilation (10%) | |||||
| Features (10%) | |||||
| Durability (10%) | |||||
| Specifications | Mammut Skywalker 3.0 | Metolius Hardtop | Petzl Boreo | Black Diamond Capitan E | Black Diamond Half Dome |
| Sizes Available? | One Size | S/M M/L |
S/M M/L |
S/M M/L |
S/M M/L |
| Adjustable? | Yes, adjustment wheel | Yes, webbing harness | Yes, plastic slider | Yes, plastic slider | Yes, plastic slider |
| Certified Activities | Climbing | Climbing | Climbing | Climbing | Climbing |
| Measured Weight (Size Medium or M/L) | 11.9 oz | 8.3 oz | 11.0 oz | 12.2 oz | 12.7 oz |
| Shell Materials | ABS Shell with EPP and EPS Foam | ABS Shell with EPP Foam | ABS Shell with EPP and EPS Foam | EPP and EPS Foam, DuraPET | EPS Foam with ABS Shell |
| Listed Certifications | CE EN 12492 | CE, EN 12492:2012 | CE EN 12492, UKCA, UIAA | CE/EN, UIAA | EN 12492, UIAA |
Our Analysis and Test Results
Likes
The Skywalker 3.0, as the name suggests, is a legacy climbing helmet from Mammut, and for good reason – it's a simple, proven design for a long-lasting climbing helmet. If you're worried about accidentally sitting on a lightweight foam helmet, then this hearty hardshell is a reasonable choice.
The Skywalker 3.0 is easily adjustable over a huge range of sizes. We liked that we could comfortably wear a hat underneath when the sun was shining, or a beanie underneath when the temperatures dropped. One of our testers noted that this is the helmet of choice for the guide service he works for because it's so adjustable for guests.
The flywheel adjustment is easy to use and covers a large range of sizes. Credit: Dom Rickicki
Dislikes
The Skywalker 3.0 is quite poorly ventilated. On hot days of cragging, we definitely noticed how much sweatier our head was with this on than with a helmet with even modest ventilation.
The most important part of wearing a climbing helmet is actually wearing it – if your head is sweaty and uncomfortable, you're prone to take it off when you should really have it on.
Don't be fooled by the large vents; the Skywalker 3.0 is even less well-ventilated than other hardshell helmets we tested. Credit: Dom Rickicki
Should You Buy the Mammut Skywalker ?
This is a good option for an affordable helmet that's sure to stand the test of time – even one of our testers keeps this helmet around to wear while developing routes, because he knows that it will protect his head from rockfall without falling apart. It's a highly adjustable, cost-effective option for guide services, but individuals should consider other options.
What Other Climbing Helmets Should You Consider?
For a similar price, the Black Diamond Capitan E offers better side protection and a more modern, more comfortable design. However, for the price, it's impossible to beat the Metolius Hardtop – it's a modern, lightweight climbing helmet that costs as much as old-school hardshell options.
—Dom Rickicki
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