Millet's POWER STRETCH II is an ultra-compact beanie specially designed for mountaineering.
This technical model, made from Polartec Powerstretch, provides high-performance fleece warmth and breathability to keep you warm and dry at all times. Its ergonomic stretch design fits snugly over the head to prevent heat loss. As a result, thermal comfort is maximized.
This beanie is highly appreciated because it can be worn under a mountaineering helmet in very cold weather without any gnawing. It also resists pilling very well.