Empowered by the Laetts Merino Thermal System™, this Heavyweight Outdoor sock with Full Cushion construction uses a refined dual-yarn build that pairs dedicated HygroHeat™ alongside fine-gauge Merino wool for balanced, self-sustaining warmth and enhanced moisture stability in cold, demanding conditions. Dense, full-foot cushioning helps blunt cold-ground conduction and relieve pressure in boots and waders, while a stable, resilient knit maintains structure and comfort—even when wet.
Designed for extended wear in cold environments, reinforced heel and toe zones enhance durability, while natural odor resistance keeps feet comfortable through long hours outdoors. Ideal for fishing, hunting, and cold-weather work, this is Laetts’ most refined Heavyweight construction, offering premium warmth, comfort, and feel for all-day use.
Learn more: Merino Thermal System



