This specialized therminal mountain long sleeve hooded jersey is made from therminal fabric which is designed to both insulate and manage moisture build up it manages this with a brushed fleece interior with a light loft that pulls moisture away from skin to evaporate it at the material39s surface this loft also has the added benefit of insulation which occurs by trapping tiny pockets of warmth between the skin and the fabric this results in consistent warmth that doesn39t come w