The Men's Burton [ak] Helium Grid Half-Zip Fleece is the mid-layer for riders who want [ak]-level performance from every piece of their kit. HeiQ Smart Temp technology actively manages heat and moisture to keep you in the performance zone all day, while stretch construction moves with you through every turn and transition. Wear it solo or layer it under a shell — it performs either way.

• 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