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Mammut
Crag Sender Climbing Helmet

4.840909090909091 out of 5 stars
44 Reviews
Current price: $59.96 Original price: $79.95
25% off
Color:Jade

Size:

Size Chart

Quantity

Only 2 In stock


Crag Sender Climbing Helmet

Mammut's Crag Sender Collection consists of climbing gear specialized for modern climbing at sport crags, and the Crag Sender Climbing Helmet is lighter and more performance-oriented than most of Mammut's helmets for all-around climbing. It utilizes a hard shell for lightness and reliable durability, and EPS foam adds impact protection. You can adjust the fit with a dial that's easy to use even while climbing, and there's an adjustable chin strap and additional cushioning to ensure a snug fit.


Details

  • Mammut's lighter climbing helmets specialized for sending at crags
  • Hardshell backed by EPS foam and Kevlar reinforcements
  • Large ventilation openings with integrated air channels
  • Headlamp attachment
  • Aerial wheel adjustment system and additional cushioning ensure a snug fit
  • Item #MAMU51X
Certifications
CE EN 12492
Fit Adjustment
chin strap
Ventilation
12 vents
Manufacturer Warranty
2 years
Claimed Weight
7oz
Shell Material
in-mold

Overall Rating

5 based on 44 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 7 reviews
5 Stars - 37 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

Customer Images

Here's what customers have to say

This lightweight climbing helmet is praised for its comfort and breathability. Users find it adjustable and barely noticeable when worn, even for extended periods. While some minor concerns are raised about padding and durability, the overall consensus is that this helmet provides good protection without being cumbersome.

AI-generated from the text of customer reviews.

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5 out of 5 stars

May 28, 2025

Light comfortable helmet. The strap adjustments are easy to use with a boa style wheel on the back. provides very good coverage of the head vs some helmets which seem to not cover as much of the back of the skull as low as some would like to depending on head shape.

Michael P
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

March 26, 2025

Favorite Helmet!

Super lightweight but still gives plenty of protection. Fits like a glove, is low profile, while still covering lots of surface area!

user image
Janelle S
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

January 18, 2025

lightweight, comfortable,and easy to adjust. great helmet.

christopher i
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

December 25, 2024

This is light weight, sturdy, and even looks good. It fits perfectly into most climbing packs or hiking packs with an external carry pocket. There was some worry about the straps being a little thinner but they are sturdy and do not twist when using. I am a beginner climber but based on the other impact activities I do I would say this helmet works for all levels.

Christopher W
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

November 17, 2024

Perfect Lightweight Climbing Helmet

The Mammut Crag Sender helmet is a clear upgrade over my BD Half Dome, offering a lighter, more comfortable fit. It's much more breathable, and so far, there have been no durability issues, though I do handle it more carefully than the BD helmet.

Matthew P
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

November 14, 2024

Good fit

Fits perfectly in the head being stable even when you bump your head in parts of the wall or roofs

Rogerio L
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

October 5, 2024

Love this helmet!

Finally used this today. Wore it all day long and didn’t realize it was on most of the time. Super comfortable. Fit really well. And was super light! I appreciate that the plastic shell covers the entire helmet unlike some of the other higher end helmets that lack the abs plastic on the sides in order to save weight.

Justin S
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

September 3, 2024

Excellent helmet

Light and agile. Decent suspension system for head fitment, slightly small fitment dial at the back but you shouldn't need to dial it much unless switching with friends. Easy-fit neck strap dials in quickly.

Erwin L
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

August 28, 2024

Great lightweight helmet!

This helmet is an excellent upgrade from an older hard plastic model I had from a different brand. It's lightweight and fits much better. My previous helmet wobbled on my head and didn't protect the front of my skull but this one fits great!

Jacklyn C
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

August 27, 2024

Great Fit

It fits great & I love the color! It came with extra padding to switch out. However, I wish it came with 2 different thickness of padding. I would love a little more padding on the crown. But other than that it is a great helmet.

Mindy D
ExpertVoice.com

Originally reviewed on ExpertVoice.com