The Black Diamond Half Dome Helmet is a classic piece of kit that has been redesigned with a lower profile, one-handed adjustment and streamlined headtorch clips. Engineered utilising a clever hybrid construction this all-round climbing helmet gives you a great balance between weight saving and durability, and is perfect for all-round climbing use. EPS impact foam and durable ABS shell Updated, low-profile suspension system Streamlined, lightweight headlamp clips One-handed fit adjustment dial Easily adjustable chin strap Weight: 290g (S/M), 320g (M/L) Size: 48-47cm (S/M), 55-61.5cm (M/L)