Winter, spring, or fall, the men's Burton [ak] Helium Grid Fleece Half-Zip is designed for high-output activities where sweat-wicking and breathability are a must. From splitboard tours to cool-weather hikes, it's the light, go-to layer that can stand alone on the hike up, add warmth under a shell, and offer year-round versatility.

• Low-Profile for Easy LayeringA slim fit and stretch fleece make for a low profile that layers easily and lets you move naturally.
• Stink Less. The sustainable Odor control of HeiQ Fresh keeps it fresh without limiting breathability.
• Built-in Climate Control. The Living Lining® with HeiQ Smart Temp reacts to your body temperature, accelerating moisture wicking when you're hot and retaining warmth when you're cold for balanced comfort all day long.
• Grid pattern offers ultimate breathability with superior moisture wicking and quick-drying performance
• Half-zip front
• Chafe-free soft-lock seams
• Made with bluesign® materials: produced with resource-efficient manufacturing processes and using only chemicals that are safe for people and the planet
• Lifetime warranty