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Black Diamond Half Dome Helmet

Size Chart

Completely redesigned from the ground up, the Half Dome is the evolution of Black Diamond's 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. Also included is a custom-designed adjustment dial for quick, secure and precise adjustments.


  • Co-molded EPS foam with low-profile polycarbonate shell
  • Updated, low-profile suspension system
  • Streamlined, lightweight headlamp clips
  • One-handed fit adjustment dial
  • Easily adjustable chin strap


  • Weight :  [S/M] 330 g (11.6 oz); [M/L] 350 g (12.3 oz)
  • Size Range :  [S/M] 50 - 58 cm (19.7 - 23 in); [M/L] 56 - 63 cm (22 - 25 in)