The specialized therminal mountain jersey is made from a therminal fabric which has been designed to insulate and manage moisture build up it has a brushed fleece interior with a light loft that pulls moisture away from skin to evaporate it at the material39s surface the loft also has the added benefit of insulation which occurs by trapping tiny pockets of warmth between the skin and the fabric this allows you to stay warm without the risk of overheating this long sleeve jersey features