Crag Sender Climbing Helmet
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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
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 51 ratings
Review Summary
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.Customer Images
Here's what customers have to say
The Mammut Crag Sender helmet is a lightweight and comfortable option that provides good coverage and protection. The adjustable fit system allows for a secure and customized fit. While some users noted the helmet has an unusual profile, it is generally considered an excellent choice for climbers of all skill levels.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageSeptember 1, 2025
Super light and comfortable, you forget that it’s even on.
Originally reviewed on ExpertVoice.com
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.
Originally reviewed on ExpertVoice.com
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.
Originally reviewed on ExpertVoice.com
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
Originally reviewed on ExpertVoice.com
July 31, 2025
Highly recommend for women!
- Familiarity:
- I've used it once or twice and have initial impressions
- Size Bought:
- S/m
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.
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.
Originally reviewed on ExpertVoice.com
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!
Originally reviewed on ExpertVoice.com
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.
Originally reviewed on ExpertVoice.com
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!
Originally reviewed on ExpertVoice.com
January 18, 2025
lightweight, comfortable,and easy to adjust. great helmet.
Originally reviewed on ExpertVoice.com
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