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Black Diamond
Half Dome Helmet

4.554347826086956 out of 5 stars
92 Reviews
$64.95
Color:Octane

Size:

Size Chart

Quantity


Half Dome Helmet

Hopefully you'll start climbing Half Dome around sunrise, because if you don't you'll definitely finish climbing after sunset. Either way, the Black Diamond Half Dome Helmet has headlamp clips as well as safety features. This helmet is Black Diamond's original, updated for more ventilation and a lower weight.


Details

  • Black Diamond's staple helmet for climbing sport and trad
  • Co-molded foam with low-profile, lightweight polycarbonate shell
  • One-handed adjustment dial with adjustable chin strap
  • Clips for headlamp
  • Item #BLD00Z9
Shell Material
polycarbonate
Ventilation
11 vents
Fit Adjustment
dial
Certifications
CE/EN, UIAA
Claimed Weight
[small/medium] 11.6oz, [medum/large] 12.3oz
Manufacturer Warranty
1 year

What do you think about this product?

Overall Rating

4.5 based on 92 ratings

Review Summary

1 Stars - 2 reviews
2 Stars - 1 reviews
3 Stars - 5 reviews
4 Stars - 20 reviews
5 Stars - 64 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 helmet is described as comfortable, lightweight, and well-ventilated, with good adjustability to fit a range of head sizes. Many reviewers say it has provided reliable protection, though some find it scratches easily. While not the most stylish or lightest, it offers good value and functionality for the price. Overall, it is recommended as a solid, no-frills helmet that meets the needs of new and experienced users.

AI-generated from the text of customer reviews.

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4 out of 5 stars

June 20, 2025

Pretty Goof

Get's the job done, not as comfortable as the petzl helmet I have, as in I have to tighten the dial a little more than I'd like for the helmet to feel secure. The chin strap is easy to adjust, and I like the dial in the back. Also, the pale blue color is really nice.

Finley P.
blackdiamondequipment.com

Originally reviewed on blackdiamondequipment.com

5 out of 5 stars

June 16, 2025

light and very adjustable fit.

light and very adjustable fit. Wore it while it was raining one day and was afraid my head would get wet through the holes but twas all gucci

Kyhl W.
blackdiamondequipment.com

Originally reviewed on blackdiamondequipment.com

5 out of 5 stars

June 7, 2025

The classic essential

The half dome, when I think of climbing outside it’s paired with those crazy senders with no helmet and the even crazier senders with helmets. When you have a helmet you push harder and feel safer. The half dome is the perfect example of a balanced helmet. Light and sturdy. Comfortable and good looking. Paired with an affordable price, this classic helmet will be ready for whatever adventure you go to next. Highly recommend.

user image
Nicholas H.
blackdiamondequipment.com

Originally reviewed on blackdiamondequipment.com

4 out of 5 stars

May 16, 2025

Solid, basic brain bucket

Familiarity:
I've used it several times
Size Bought:
Large

Fits well, is adjustable and good price/quality for an “entry level” helmet. There are definitely better, lighter, more breathable helmets out there but can’t really beat the price of the BD half dome.

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TRsoloist
5 out of 5 stars

May 11, 2025

Good relation quality/price

Familiarity:
I've used it several times
Size Bought:
S/M

Gods option if you don’t want to spend too much and still get reliable protection

Juli
4 out of 5 stars

March 20, 2025

A Great Helmet

I have taken this thing everywhere, I love the light weight feel that makes me feel protected nonetheless. Definitely doesn't have all the features that the higher end helmets have but the boa in the back tightens to my head just fine, it has enough ventilation for me to hike with it on when doing scrambles and I take it climbing all the time.

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Bryce P
ExpertVoice.com

Originally reviewed on ExpertVoice.com

4 out of 5 stars

February 12, 2025

Great overall helmet

Not the most light weight and has a few snag points but it just depends on what type of climbing you’re doing

Nathan A
ExpertVoice.com

Originally reviewed on ExpertVoice.com

4 out of 5 stars

September 22, 2024

Great helmet for the cost

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

Used this helmet to hike Black Tusk in British Columbia. The fit was good. Chin strap was a little annoying, but that is any helmet.

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Foul mouthed Prophet
4 out of 5 stars

January 31, 2024

Reliable

I guess you can always go lighter and more comfortable, but I often forget its up on my head. It just does the trick. The twist-adjuster is a huge time saver. Though I think that's probably a standard on everything now, IDK.

Peter G
ExpertVoice.com

Originally reviewed on ExpertVoice.com

3 out of 5 stars

October 26, 2023

Good basic climbing helmet, with limitations

This is a good basic climbing helmet. I use it primarily as a low-cost search and rescue helmet. I do notice, however, that the cradle easily becomes dislodged from the shell. The helmet also tends to slip some on contact. These are safety concerns, and should be kept in mind while making a purchase decision.

Glendoval S
ExpertVoice.com

Originally reviewed on ExpertVoice.com