Minus33 Merino USA Made Over-the-Calf Socks – Expedition Weight, Olive Green (Medium)

When the trail turns cold and wind bites, you want socks that feel as sturdy as your boots and as comfortable as a favorite everyday pair. Minus33 Merino Wool’s USA-made over-the-calf expedition-weight socks bring together heritage craftsmanship and a Merino-rich blend designed for mountaineering and rugged hiking. Knitted at a historic mill in Ashland, New Hampshire, these socks connect mountain heritage with modern performance.

Craft, Origin, and material balance

Two Merino-rich blends power these socks. The base blend features 80% Merino Wool with nylon and stretch fibers to provide warmth, structure, and flexible fit. A higher-merino variation in expedition-weight design emphasizes warmth with 86% Merino Wool for colder days and damp conditions. The natural fiber’s softness cushions the foot while efficiently wicking moisture away, helping feet feel dry as you push through long climbs.

• Made in the USA: Knitted at a historic Ashland mill, anchoring the product in regional craftsmanship.
• Merino-rich blends: 80% Merino Wool with nylon and stretch fibers balance warmth, durability, and flexible fit.
• Expedition-ready warmth: an 86% Merino Wool blend in the expedition-weight design for harsher conditions.
• Performance fit and moisture management: contoured shaping reduces slipping and blisters; quick-wicking fibers keep feet drier longer.

Designed for real-world use

These over-the-calf socks stay in place through steep ascents and long approaches. The plush Merino interior feels soft against the skin, while the exterior has a sturdy knit that resists trail grit. Expect warm toes on windy ridgelines, quick drying after a sweaty climb, and a balanced weight that pairs well with mountaineering boots or winter hiking footwear.

• Fit-first design: anatomically shaped to move with the foot and minimize slipping or bunching.
• Warmth without bulk: expedition-weight construction adds insulation where it matters most.
• Moisture management: Merino fibers draw moisture away from the skin, aiding evaporation and comfort.
• Durable build: sturdy knit resists wear and holds its shape after repeated outdoor use.

Care and longevity

Designed for active outdoor use, these socks are machine washable and dryable, making upkeep straightforward after backcountry trips or gym sessions. With proper care, they retain softness, shape, and performance for multiple seasons, helping you stay comfortable on the trail’s most challenging days.