Merino Thermal Socks

Merino Thermal Socks — Warmth Without Bulk

Built on the Laetts Merino Thermal System™, these socks pair extra-fine Merino wool with patented HygroHeat™ to deliver moisture-responsive warmth—no batteries, no bulk. In internal wet-condition lab testing, they measured up to 8.8 °C warmer while staying breathable for odor control.

Select styles add BootGlide™ low-friction zones for easier boot entry and removal, so you move comfortably from winter sports to everyday wear.

Stay warm. Move free.