BREATHABLE - Lightweight fabrics help regulate body temperature and keep you comfortable.LIGHTWEIGHT - A lightweight construction gives comfort and greater mobility.RECYCLED CONTENT – Helps reduce landfill waste and the use of virgin materials.As fleeces go, the Glacier Pro is a classic. This full zip version is made from Polartec® micro fleece that delivers lightweight warmth thanks to its unique lofted structure. Air pockets trap air without compromising breathability, so you stay warm without getting sweaty. The chest, shoulders and outer forearms feature a stretch polyester overlay for optimal freedom of movement and improved durability when wearing a backpack. This jacket has a chest pocket and elasticated cuffs and hem.