Black Diamond Half Dome Helmet


Item #: 331070199

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.

NOTE: Find in Store Inventory levels are continuously changing. Please contact store to confirm availability is as shown.


  • 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
  • The most durable helmet Black Diamond makes


  • Weight: S/M 310 g (11 oz), M/L 340 g (12 oz)
  • Fits head circumferences: S/M 48-57 cm (19-22.5"), M/L 55-61.5 cm (22-24")
  • CE, UIAA Certified

Shipping Info:

  • Leaves the warehouse in 1-7 business days depending on order volume.
  • Items may be returned within 60 days of the order date to an Atmosphere retail store or an Atmosphere warehouse. Items must be returned unused/unworn and electronics unopened. See Online Return Policy and Return Instructions for more information.
  • Note: Shipping restrictions may apply based on location and product size.


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