andrew S.wrote a review of Black Diamond Vector Helmet on February 8, 2019
Familiarity: I've put it through the wringer
Comfortable helmet, barely can notice wearing it.
Standing up into roofs, etc dents the helmet pretty easily.
Took a basketball sized piece of ice to the head from ~30' and it protected me without any pain.
Retiring after 4 years and going with a hard plastic shell for ice climbing. Would buy again for just rock.