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Black Diamond Half Dome Helmet


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  • Aluminum, S/M
  • Caspian, S/M

Ponytail power.

With a classic design now updated to comfortably fit a ponytail, the Black Diamond Women's Half Dome Helmet offers the protection you need on route without the discomfort and futzing you used to have to do to get your hair to stay out of your face and under your helmet. Built with a durable and shock-absorbing polycarbonate shell and EPS foam inner, the Half Dome fits securely and hassle-free on your head, adjusting via a one-handed dial system. The lightweight design also sports easy-to-use headlamp clips and a chin strap that can be quickly adjusted so you can fit a beanie under your helmet in the case of colder climbs.

  • Sport this sturdy helmet with your ponytail on any rock climb
  • Women's specific fit includes ponytail-friendly shell shape
  • Polycarbonate shell and EPS foam add protection
  • Easily adjustable chin straps offer versatile wear
  • Dial adjustment moves with only one hand for secure fit
  • Item #BLD00N2

Shell Material
Impact Foam
Fit Adjustment
Claimed Weight
Recommended Use
mountaineering, sport climbing, trad climbing
Manufacturer Warranty
1 year

Tech Specs

California Proposition 65


This product can expose you to chemicals including Bisphenol A (BPA), which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

What do you think about this product?


>Rating: 5

Perfect Helmet

I've put it through the wringer
True to size
Size Bought
5` 4"
140 lbs

I love this helmet- it's basic, but gets the job done. And you can't beat the price. I've used this a lot climbing but also use it as my river helmet as I don't have a river specific one. It's very durable and lightweight. I also love that the women's version has a cut out area for a pony tail- makes it much more comfortable for me having my hair off my neck.

>Rating: 3

Invest in a Better Helmet

I've put it through the wringer

I used this helmet for two years before buying the Black Diamond Vapor helmet. I wish I bought the Vapor right from the start. It's noticibly lighter, fits better, has better air circulation, and has a lower profile compared to the Half Dome helmet. The half dome fulfills it's function, but there's better helmets out there. My two cents: go with a different helmet.

>Rating: 5

Great helmet for all!

I've used it several times

I brought this helmet with me on a climbing trip in Moab and was able to share with a couple friends because the dial allows for great adjustability. I feel way more comfortable down as a belayer with a helmet on, and this one fits the bill! 10/10 would recommend!

>Rating: 5

Great for Varying Head Sizes

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

This helmet is the perfect helmet to climb with friends! It’s super easy to adjust with the chin straps and dial adjustment- it fits a wide range of head shapes/sizes. I have a pretty round but average head size and thick hair, and one of my friends had a pretty small/narrow head with thin hair and it fit both of us great! When a few of my friends came in to town (gearless) to visit, this helmet came in clutch and we were all able to use it. The ponytail feature was pretty cool and a beanie/hood fit seamlessly under the helmet too. The Half Dome is lightweight so it’s easy to bring along on any trip and stay better protected!

>Rating: 5

Protect your noggin!

I've used it several times

Fits great, and dial allows comfort fitting for a range of head sizes. We all know that it takes less than a second to knock an errant rock lose and worry about hitting someone below. So protect your noggin just in case you are the person below. It's light weight and i can just clip it onto my backpack to be prepared for any situation i might find myself in!

>Rating: 5

lightweight, sleek, and functional

I've put it through the wringer

Of course the best part about this helmet is the ponytail compatibility, but it's also lightweight and looks good. The dial adjustment ensures a perfect fit and the ponytail friendly design really helps with those sweaty days at the crag.

>Rating: 5

Pony Tail Bliss

I've used it several times

I can't believe there aren't any reviews on this helmet! It's lightweight and the light blue color keeps me cool in the Moab heat. There is also an area for a ponytail/bun to fit under. This is crucial for me cause I have a thick head of hair. Great helmet all around.