Midweight warmth backed by Polartec® Power Grid™ that maximizes the breathability and sweat-wicking power of your layering program.

Take a hike (to the summit) and don't look back until you have to look down. The men's Burton [ak] Helium Power Grid™ Base Layer Crewneck is made with sweat-wicking fabric to help you stay cool while you work. Polartec® Power Grid™ fleece keeps it super light and breathable, and keeps out the cold like you need it to. A close-to-skin fit means you get the flex you want on the hill.

• Slim fit sits close to the body, with room for the garment to move with you
• Polartec® Power Grid™ fabric increases warmth and breathability in a lightweight and durable design that reduces mass and maximizes performance
• Grid pattern offers ultimate breathability with superior moisture wicking
• Chafe-free softlock seams for added comfort
• bluesign® approved materials use only safe chemicals and reduce impact on both humans and the planet during manufacturing
• Lifetime Warranty