This warm, lightweight fleece can be worn year-round as a mid-layer, pulled on over a T-shirt, or as a base layer through the winter. The fabric moves moisture, so it's comfortable through a range of activities and assorted atmospheric conditions. Made from soft, moisture-wicking 100% polyester fleece Flat-locked seams eliminate friction under backpack straps Stretchy neck opening for easy dressing Coordinates with MEC Stratosphere Tights