The Outdoor Research Alpine Onset Merino 150 Balaclava combines lightweight warmth, moisture management, and versatile face protection in a comfortable merino wool blend.

Constructed from a 150 gsm blend of non-mulesed merino wool, recycled polyester, and elastane, the Alpine Onset provides natural temperature regulation and odor resistance while efficiently wicking moisture away from the skin.

Its lightweight construction makes it particularly well suited for high-output cold-weather activity where warmth is needed without excessive bulk. The fabric dries quickly and remains comfortable during extended wear, making it a practical option for winter field exercises, alpine travel, and multi-day use.

An updated hinged construction allows the face coverage to be adjusted as weather conditions and activity levels change. The balaclava can provide more complete protection against cold and wind or be opened for increased ventilation without removing the entire layer.

Integrated UPF 30 sun protection adds useful protection during prolonged winter exposure, particularly in snow-covered and high-altitude environments.

Lightweight, adaptable, and naturally odor resistant, the Alpine Onset Merino 150 Balaclava is an excellent addition to an active cold-weather layering system.