Terramar Body-Sensors Geo Fleece Expedition Weight Pullover Hoodie - Men's Constructed of 95% micro polyester and 5% spandex. Features ec2 Qwik-Dri Thermoregulation Comfort Technology: an electrostatic process that allows for moisture movement without the garment touching the skin. Highly breathable and fast-drying. Dual surface knitting system incorporates high loft grid channels for enhanced breathability and effective moisture transport. Expedition weight; warmest control layer for extreme cold.