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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 - 61.5 cm (22 - 24 in)


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

Half Dome Helmet is rated 4.6 out of 5 by 33.
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 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 4 out of 5 by from gets the job done If you're climbing or belaying (outside of the gym) you should be wearing a helmet. This one is durable enough to last you years of service, and is priced to be entry level. No, its not ultra-lightweight, but it has a one-handed adjustable backstrap, and doesn't actually look half bad. Note: when you first get it, adjust the sizing of the straps, including moving the chin strap forward if you need to (you can feed strap from one side to the other via the back of the helmet). This prevents the feeling of being choked by the chin strap, which shouldn't happen if it's properly adjusted.
Date published: 2015-03-17
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 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 Light duty workhorse The Half Dome is light and comfortable, so I don't mind wearing it. I don't really notice it is there, sort of like a seatbelt. As a foam-lined helmet, it will not take abuse quite like a full-suspension helmet, so I use a full-suspension style helmet for days when I _expect_ to take lots of scrapes & hits. Otherwise, the Half Dome protects my head on the days I would have otherwise gone bare-headed, because I don't mind wearing it. "The best kind of helmet is the helmet you will wear"
Date published: 2013-10-03
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 A true work horse I bought this only after switching to those the fancy light weight super-duper helmets. I sat on my fancy one and broke it. So now the light weight foam helmet is saved for when I am really weight conscious, but this is what I use and abuse (although I don't really abuse it). Durable and almost equally light and as comfortable as any other helmet. If you are going to own one helmet, make it this one.
Date published: 2014-11-15
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