Black Diamond Half Dome Helmet


Sold Out
We'll tell you when there's more:


Add to CartUnavailableNotify MeSpecial Order
, - (Sku )
(% off)
  • Select an item for delivery date
    via standard shipping  
    Special Order: Enter a zip for delivery date
    Estimated to ship - details
    Enter a zip for delivery date
    Estimated to ship - details 
    Special Order - Delivery: ,  
    Estimated, via standard shipping  
  • $ extra handling fee
  • 30-day Guarantee & Easy Returns
  • Available within the U.S. only
  • CS: Ships from
  • CS: on hand


Following the safety first motto, a high quality climbing helmet like the Black Diamond Half Dome Helmet is a necessity. Black Diamond’s dedication to rock and alpine climbing is renowned, and the Half Dome Helmet is a great example of their quality, innovative design work. First off, this helmet delivers all-mountain utility. Whether your passion is rock, ice or alpine climbing, the Half Dome’s hybrid design fosters awesome ventilation, easy fit tuning and certified head protection. The suspension system’s fit dial allows you to customize the fit to accommodate a beanie or your new haircut. You wouldn’t ride your mountain bike without a helmet, and you shouldn’t climb without one either. Put safety first with the Black Diamond Half Dome Helmet.


  • Hybrid design with molded EPS foam, great ventilation and highly adjustable fit system
  • Custom wheel adjuster allows for fine-tuning of fit
  • Secure Headlamp clips
  • The most durable helmet Black Diamond makes
  • Size Range: S/M = 48 - 57 cm (19 - 22.5 in), M/L = 55 - 61.5 cm (22 - 24 in)
  • Weight: 290 g, 10 oz (S/M), 320 g, 11 oz (M/L)

Find More

Review Summary

4.8 out of 5

6 Reviews

6 Ratings & Reviews


Very Pleased With the Helmet
March 19, 2010

I am very pleased with this helmet. I have only used it for a winter travel class at Rainier Paradise but it was quite comfortable. I often find helmets itchy and this was not. Also, the helmet fit quite well and the size can easily be changed with the turn of a crank. My hat size is 7 and it seemed to be in the middle of the range. My fiancee also tried it on who is a hat size six and it fit her as well. Lastly, the gray color (which I ordered) looks more to me like a light blue. I assume the actual blue color is a darker blue. The helmet was also light and I barely noticed it when attached to my pack. Highly recommend.


BD half dome is just fine
April 02, 2010

easily adjustable & real light. i've used 'em before and just never had any kind of issue. black diamond has a comfortable i bought one.


Another solid product by Black Diamond
March 14, 2010

This is my second BD Half Dome. I decided to retire the previous helmet after 6 years of protecting my head while mountaineering and rock climbing. The updated BD Half Dome was a natural choice for me as I was happy with the previous helmet and like the BD brand overall. I got the new Half Dome in bright orange to make myself visible on the mountain. It is lightweight with the suspension system which is easy to adjust. Overall, the helmet feels light and comfortable. I expect that it will work well with the head lamp as the design seems similar to the prior model (which worked great). One thing I noticed is that the chin straps could be a little too long for a person with a small head (a woman or a child).

Great Helmet
April 02, 2010

The BD Half Dome is the best fitting helmet for my head. I use mine for caving. I've had a BD Half Dome for a year. I have liked it, so I bought another one for work.


Great helmet for $50
March 17, 2010

The grey helmet actually looks like blue. Great helmet and really comfortable. Seems to fit all sizes.


Great, light helmet
July 10, 2011

This helmet will protect you from the unexpected rock etc. Better yet, it's lightweight and gets reasonable circulation. It does stand up kind of high on your head, but not so much that it gets in the way of climbing.

Also Available

Black Diamond Half Dome Helmet Photo

Blizzard, Cafe, Limestone, Orange and Tropic.

Available sizes, while supplies last, include size s/m and size m/l: s/m, m/l.

  • Talk to Us:
    (800) 369-3949
  • We're Available:
    Mon-Fri: 7:30am-4:00pm PST
    Sat-Sun: CLOSED