Jack Searswrote a review of Black Diamond Half Dome Helmet on October 17, 2019
Familiarity: I've used it several times
Purchased the Half Dome helmet for our university hybrid indoor adventure climbing class because we liked the weight, the mechanism for tightening and the straps. We thought we had a real winner until we were inspected by ACCT and they would not certify our new helmets. The Black Diamond Half Dome are to be used in mountaineering, rock climbing or ice climbing, but not for use in challenge courses such as ours. The nice folks at Black Diamond were helpful, but unable to assist because they don't make helmets for challenge course use. Unfortunately Backcountry doesn't put the "fine print" on their website, so I didn't know that these helmets were not for challenge course use. We got a good deal on the purchase, but are now disappointed that we have to buy more helmets that meet the standards for ACCT. Read the fine print "instructions" on Black Diamond's website.