Polartec Power Stretch
Mountain Equipment and Polartec® have been working closely together for decades. Polartec® have a long history, existing as Malden Mills since 1906, but their 1981 invention of the modern synthetic fleece is what they are best known for, and which started a revolution in the outdoor market.
Polartec® Power Stretch® fabrics are legendary performers, featuring body-hugging 4-way stretch and exceptional breathability. They keep you dry when you sweat and provide warmth without weight. There are numerous different iterations of Polartec® Power Stretch® and we - of course - buy only the very finest version, which has barely changed since its inception. For expedition baselayers, warm and durable midlayers, or soft but protective garments it is hard to beat.
Polartec® Power Stretch® keeps the skin dry through three complementary mechanisms:
1. The fabric is highly breathable and does not restrict the movement of moisture vapor.
2. 'Touch Points' on the fabric inner surface draw off sweat. Sweat is wicked off the skin to the outside of the fabric, where it spreads rapidly for evaporation.
3. When the sweat reaches the outside of the fabric, it spreads out to many times its original surface area, enabling it to dry at least twice as fast as cotton.