Singing Rock's Terra II is a tough, lightweight helmet that is comfortable to wear, even for long periods of time. The polycarbonate shell provides excellent impact protection and the polystyrene foam interior is easy on your head. The Terra II's head harness is one-size-fits-all and adjusts easily with one hand. When you're done for the day, the harness folds back into the helmet for easy transport and storage. Four clips hold most headlamps, so the Terra is perfect for caving or night climbing. Excellent ventilation keeps you cool during the summer. A great helmet at an affordable price.