Home Page
When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.

Cart, contains 0 items

Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
  • New Arrivals
  • Current Steal$

Mammut
Crag Sender Climbing Helmet

4.78 out of 5 stars
50 Reviews
Current price: $74.96 Original price: $80.00
6% off
Color:Titanium

Size:

Size Chart

Quantity


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 50 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 9 reviews
5 Stars - 40 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

The Mammut Crag Sender helmet is a lightweight, comfortable, and adjustable climbing helmet that provides good coverage and protection. Many users appreciate its breathability and customizable fit, though some note its slightly unusual profile. Overall, it is considered a high-quality helmet suitable for climbers of all levels.

AI-generated from the text of customer reviews.

View

Selecting an option will reload the available reviews on the page
4 out of 5 stars

August 20, 2025

Climbing Helmet

I use this as my primary climbing helmet and do not particularly love wearing helmets but, I think this one is just fine.

Blake N
ExpertVoice.com

Originally reviewed on ExpertVoice.com

4 out of 5 stars

August 17, 2025

Breathable, light, safe

A great lightweight helmet that stays cool during hot days. The tightening system is easy to use, very precise, and comfortable. After using the helmet twice a week for 3 months, the internal padding has remained pristine and is showing no wear. However, as with any helmet, I recommend taking it off when applying deet bug spray because the finish on the top of my helmet is starting to peel a bit.

Collin A
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

August 8, 2025

Great all round helmet, I absolutely love the tightening mechanism and it's overall comfort. It's very durable but still light enough to strap to my pack for long technical mountains

Alex Q
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

July 31, 2025

Highly recommend for women!

Familiarity:
I've used it once or twice and have initial impressions

Purchased the s/m size after measuring my head with a tape measure. I was close to the end of the s/m but below the m/l size and I'm happy I went with the smaller size. I am female with extremely thick, curly hair. I often have trouble with baseball caps, but the helmet fit over my hair without issue. The helmet fits extremely well. It is lightweight, breathable and very comfortable. I wore it in 90+ F° with 50% humidity and barely noticed the helmet, while fellow climbers were dying to get their helmets off. We were also putting up new routes with a bunch of loose rock and the helmet took it well. I personally love the jade color. Super impressed.

Emilie Z
Backcountry.com

Originally reviewed on Backcountry.com

3 out of 5 stars

June 27, 2025

Too deep

This helmet is deeper than the wall rider. The shell itself rests on the top of my ears and the adjustment arms didn’t want to stay off the base of my ears. The deep shape also gives it a weird profile on head and felt pretty goofy in it. The brow also would not allow me to wear sunglasses in conjunction with the helmet. On the positive side, it is super comfy other wise and really light considering how much additional shell Mammut added to the foam versus leaving it exposed.

William P
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

June 21, 2025

Light and size adjusts well for when I'm just wearing the helmet the crag, or have on hat and hoods while alpine climbing in the winter. I think the best review for a helmet is "I forget that I have it on", which certainly applies here! Highly recommend it!

Dave H
ExpertVoice.com

Originally reviewed on ExpertVoice.com

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