The Essential Lt Warm is made from breathable stretch fleece. It's a comfortable choice when a short-sleeved shirt isn't warm enough, or when you need more insulation under a jacket than a base layer can provide. Ideal for running, hiking, skiing, commuting by bike, and more! - Regular fit - Main material is warm AdvancedSkin stretch fleece - Three zippered pockets - Lighter fabric panels in areas prone to sweating - Excellent freedom of movementalso great for activities like disc golf