The ALPILLE III undergarment with high-zip collar is part of the Fusalp wardrobe essentials that allow you to build your ski wardrobe with comfort, warmth and ease of movement in mind. The ALPILLE III undershirt has a tight fit that allows it to be worn under a light jacket and ski jacket combo. A Made of technical powerstretch material with Therma technology, it can be worn next to the skin. Therma technology is a thermoregulation process that provides maximum warmth while wicking perspiration outwards.