When the mountain calls for an extra layer, this answers. The Men's Burton Midweight X Base Layer Crew will keep your personal climate under control, with quick-drying, highly breathable fabric. Four-way stretch fabric will have you at peak flexibility.

Details:

• Chafe-free seams and four-way stretch feel good no matter how hard you're working or lounging.
• Bluesign approved anti-odor finish keeps the stink away.
• The Living Lining 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.
• Low Environmental Impact
• Bluesign approved materials reduce impact on humans and the planet during manufacturing.
• Slim Fit
• Chafe-Free Softlock Seams for Comfort
• Living Lining Midweight 200
• Quick-Drying and Highly Breathable
• Stretch 360° For Unlimited Mobility
• Thumbholes
• Living Lining Midweight 200: 92% Polyester, 8% Spandex
• Lifetime Warranty