Adjustable, comfortable, and durable, the Black Diamond Half Dome Helmet ensures an optimal fit to preserve your safety out on the rocks. With two size options and an adjustable wheel suspension system, this lightweight helmet is suitable for any climber. It is highly ventilated with molded EPS foam, and includes headlamp clips to make for easy headlamp attachment. DESIGN Adult climbing helmet Durable lightweight design Available in Small/Medium or Medium/Large Adjustable wheel suspension system Hybrid design with molded EPS foam Ventilated design for comfort Includes headlamp clips for easy attachment SPECS Weight: 11 oz. (S/M), 12 oz. (M/L) Size: 19 - 22.5 in. (S/M), 22 - 24 in. (M/L) Additional Details Style: BD620206