We designed the Backcountry Pines Microgrid Ultra - Lt Baselayer 1 / 2 - Zip Scuba Top specifically for high - output activities at higher elevations. A part - polyester and spandex blend with a plush microgrid back and smooth face keeps our body temperature regulated, offers moisture - wicking protection, and stretches for optimal freedom of movement during our activity of choice. We also added a half - zip with a tall, Lycra - bound scuba hood to customize coverage depending on the temperature and amount of powder falling down.