Made from recycled polyester, the Patagonia Capilene Lightweight zip-neck long underwear top gets you through all four seasons of climbing trips, powder days and fall hikes.

• Recycled polyester breathes well, wicks moisture and dries quickly for high exertion in warm conditions
• Antimicrobial treatment resists odors
• Smooth fabric face glides easily in any layering system
• Subtle grid pattern sits lightly and comfortably on the skin
• Collar with internal neck tape for comfort
• Long center-front zipper vents body heat; low-bulk backing is comfortable on the skin
• Flatlock seams and offset shoulder seams minimize chafing
• Full underarm gussets add range of motion and chafe-free comfort
• Elastic thumb loops provide secure hand coverage
• Locker loop for hang drying
• Droptail hem
• Fair Trade Certified sewing; bluesign-certified fabric