Men's Performance Base Layers

Polygiene™ applied during production reduces odor and washing frequency, eco-friendly, silver-based, and safe on skin. Bluesign® approved and long-lasting. No catch!

The Men's Merino Fusion Base Layer Long Sleeve is the first layer that checks all of the boxes. Sustainably made from our merino wool and bamboo

Men's Merino Fusion Long Sleeve Base Layer

The 6 Best Thermal Underwear of 2024

The 5 Best Base Layers of 2024

Men's Base Layers

Men's Base Layers

Men's Performance Base Layers

Men's Technical Base Layer, Erling

Designed and built as the foundation of our 3-layer , clothing system, the Performance baselayers work in harmony with , North Sails Performance

Performance Baselayer Top

Trade in those cotton thermal longies that get all soggy and stinky when you work up a sweat. Buck Naked® Base Layers are now a long stretch better at

Men's Buck Naked Base Layer Pants