Men's Fleece Full-Zip Four-way stretch fleece offers multi-sport utility and works as base or midlayer depending on the temperature. Warmth and Breathability: Midweight Polartec® Power Grid™ fleece breathes great and manages sweat when your hiking or working hard. A snug next-to-skin fit and chafe-free seams add up to comfort that lasts all day long. Made to Layer: A slim fit and thumbhole cuffs make for easy layering when you need to pull on a shell. The Burton Men's Helium Power Grid Full-zip is made for every adventure. Skin it, boot it, or just go for a hike. The men's Burton [ak] Helium Power Grid™ Full-Zip Fleece layers easily, dumps heat on the uphill, and delivers warmth on the way down. The pack-friendly design is wind and weather resistant on the front with an extra-breathable panel on the back. It's that go-to layering piece that can stand alone on the hike up and feels great under a shell, too. Burton Men's [AK] Helium Power Grid™ Full-Zip Fleece