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Half Dome Helmet

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Our durable, comfortable and supremely adjustable workhorse, the Half Dome is built for the relentless pursuit of all styles of climbing. READ MORE
Item# BD620206BDORM_L1


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Our durable, comfortable and supremely adjustable workhorse, the Half Dome is built for the relentless pursuit of all styles of climbing. Learn More


Completely redesigned from the ground up, the Black Diamond Half Dome is the evolution of our most popular climbing helmet. With an improved fit and weight savings of more than 40 grams over the original, the Half Dome is an all-purpose workhorse ideal for everything from trad cragging to alpine expeditions. We also added a custom-designed wheel adjuster for quick, secure and precise adjustments.

  • Hybrid design with molded EPS foam, generous ventilation and highly adjustable suspension system
  • Suspension's custom wheel adjuster allows for improved fine-tuning of fit
  • Headlamp clips are the most secure headlamp attachments on the market
  • Available in 2 sizes
  • The most durable helmet Black Diamond makes

Tech Specs

Weight :  
[S/M] 310 g (11 oz)
[M/L] 340 g (12 oz)
Size Range :  
[S/M] 48 - 57 cm (19 - 22.5 in)
[M/L] 55 - 61 cm (22 - 24 in)


VIDEO PROFILE: BD athlete Conrad Anker ice climbing in Hyalite Canyon, Montana

Half Dome Helmet is rated 4.7 out of 5 by 50.
Rated 5 out of 5 by from Great protection This helmet saved me from at the very least a severe concussion, but more than likely an extended hospital stay. I was hit by a softball sized rock from probably about 20 - 30 feet while belaying. I was knocked down (but not out). Except for being stunned with a minor headache, I was uninjured. I was back on the wall after a short rest with no lingering issues. The plastic shell had a visible crack in it. When I returned home, I took out the EPS foam which was clearly deformed from the impact. I'll be picking up my replacement helmet before my next outing.
Date published: 2015-04-07
Rated 3 out of 5 by from Hot, Heavy, Good Headlamp Clips, Good Adjustment The Half Dome is a good workhorse. It's great in many ways, lackluster in others. It's a helmet. It meets safety standards, but I wouldn't consider it a standout. Pros: The headlamp clips are great. When you're rappeling that 5-pitch trad route in the dark, you don't want your headlamp popping off and dropping into the dark abyss. Not a concern with these clips. It's not an expensive helmet, so that's a plus,too. I use this helmet for my climbing school -- they're great for multiple users because the headband adjustment is easy to use. Con: This helmet is HOT. The foam used for impact protection prevents airflow on the top of your cranium, resulting in a hot head, so I don't like it much for summer climbing. Not as much of an issue in the winter. It's also a fairly heavy helmet.
Date published: 2016-01-05
Rated 5 out of 5 by from Perfect for zip lining and GoPro in Costa Rica! Fits very well, adjustable for correct fit under chin. If your head size is right in between SM/ML, go with the bigger helmet for sure. My new wife and I each got one for mounting our GoPro hero 4 black and Cat Eye Volt 300. Perfect set up if you ask me. Very pleased Ps, one slight improvement I'd make (but helmet is great as is) is a thin padded cover over the bottom of the chin strap. With added mouts and weight, strap can cut into me a bit. Offering and optional add on would be awesome. Thank you, helmet is 9/10 and customer service while returning my sm for a ml size went easy as possible, and quick! ... G&A Duoos
Date published: 2014-11-09
Rated 5 out of 5 by from This helmet saved my life. I’ve had this helmet since I’ve started climbing, about 3 years ago, and up until yesterday it hadn’t never done more than preventing me from hitting my head on the wall. Yesterday at shelf road I grounded out and hit my head. The helmet taking the brunt of the impact I walked away with only needing 4 staples. Undoubtedly this helmet saved my life. Black diamond, you have a lifelong customer.
Date published: 2017-11-26
Rated 5 out of 5 by from Beats a work horse, it's a work mule! I've been using this helmet at >20 times per month for over 10 years, in its few different models. They have solidly gotten better over the years and I like the current models the best. Decent ventilation and solid protection. Quite adjustable on the fly to meet rapidly changing conditions such as in the mountains or in the tropics. I've worn a BD Half Dome for my head protection in over 7,000 abandoned mines and over 3,300 natural caves around the globe. From over 14,000' in freezing cold mines, to boiling hot features in Fiji, to oven conditions in the Atacama. What will you always find in my expedition bag? A BD Half Dome! Thanks BD for making such a solid helm. Saved my life when I was 250' a shaft and a rock came hurtling down. Helmet took the beating, not me and I have thanked my lucky stars ever since.
Date published: 2018-03-20
Rated 5 out of 5 by from Great Outfitter Helmet These helmets last and last... we have had BD Half Dome helmets for the past 10 years. They last a long time even when using them for outfitting large groups. We are on our second set of helmets, only because we decided to replace due to age (not condition). We had some other brands of helmets in the mix over the years and they didn't hold up as well. If you want a versatile and comfortable helmet to use for the long haul... get the half dome.
Date published: 2015-07-29
Rated 5 out of 5 by from Excellent piece of equipment Excellent helmet that does the job with few frills and a great price. The headlamp clips are super handy for keeping your light attached and the helmet itself is very breathable. My wife had the unfortunate opportunity of testing hers out and it very well may have saved her life. Some loose rock gave way during a recent decent and after a summersault she caught her fall on the side of her head. She walked away with only some bumps and scrapes. The helmet did its job and despite some minor scratches is still very serviceable.
Date published: 2015-07-06
Rated 5 out of 5 by from Perfect hard shell helmet I bought this helmet in 2014 for canyoning in Mexico and it always performed great. Is a nice hard shell but very comfy specially in rough and wet situations.
Date published: 2017-07-17
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