• Black and gray striped Laetts Merino wool crew socks featuring patent-allowed HygroHeat™ warmth technology for medium cushioning everyday wear.
  • Laetts black and gray striped Merino wool crew socks with patent-allowed HygroHeat™ thermal technology, flat product display.
  • Close-up texture detail of Laetts black and gray Merino wool casual crew socks featuring patent-allowed HygroHeat™ thermal yarn.
  • Laetts navy and gray striped Merino wool crew socks with patent-allowed HygroHeat™ thermal technology, shown in angled product display.
  • Laetts navy and gray striped Merino wool crew socks with patent-allowed HygroHeat™ thermal technology, flat lay product image.
  • Close-up texture detail of Laetts navy and gray Merino wool crew socks featuring patent-allowed HygroHeat™ thermal yarn.
  • Laetts green and black striped Merino wool crew socks with patent-allowed HygroHeat™ thermal technology, angled product display.
  • Laetts green and black striped Merino wool crew socks with patent-allowed HygroHeat™ thermal technology, flat lay product image.
  • Close-up texture detail of Laetts green and black Merino wool crew socks featuring patent-allowed HygroHeat™ thermal yarn.

Midweight Casual — Light Cushion

Midweight Casual — Light Cushion

Merino Thermal Socks — Warmth Without Bulk

$27.95
$27.95
SAVE Sold out

Patented HygroHeat™

Extra Fine Merino Wool

30 Day Return

Free-shipping on Orders $89.00+

Empowered by the Laetts Merino Thermal System™, this Midweight Casual sock with Light Cushion construction blends a fine-gauge Merino knit with patented HygroHeat™ for warmth without bulk and reliable moisture and odor control. A sleek, low-profile fit slides easily into sneakers and everyday boots, while light sole cushioning adds just-right support for all-day comfort.

Designed for daily wear, the Merino blend wicks moisture, resists odor, and adapts across changing activity levels—keeping feet comfortable from the office to errands to evening walks.

Learn more: Merino Thermal System

Attributes

Shaft Height:    Crew

Weight:            Medium

Cushion：       Light-cushion

Form：             Anatomic

Style：             Casual smart

Item Number：L202404∽06

Fibre Content

46% Acrylic, 30% Wool, 22% Nylon, 1% Polyester, 1% Spandex

Care

Machine wash in warm water on gentle cycle, inside out. Do not bleach. Tumble dry low or hang dry. Do not dry clean. Do not iron.

Black and gray striped Laetts Merino wool crew socks featuring patent-allowed HygroHeat™ warmth technology for medium cushioning everyday wear.

Midweight Casual — Light Cushion

$27.95
$27.95
SAVE Sold out
View full details

MERINO THERMAL SYSTEM™

HYGROGHEAT™

BOOTGLIDE™

Warm & Light

Temperature-Regulating

Moisture-Wicking

Odor-Free Comfort

MERINO THERMAL SYSTEM™

HYGROGHEAT™

BOOTGLIDE™

Warm & Light

Temperature-Regulating

Moisture-Wicking

Odor-Free Comfort

MERINO THERMAL SYSTEM™

HYGROGHEAT™

BOOTGLIDE™

Warm & Light

Temperature-Regulating

Moisture-Wicking

Odor-Free Comfort

MERINO THERMAL SYSTEM™

HYGROGHEAT™

BOOTGLIDE™

Warm & Light

Temperature-Regulating

Moisture-Wicking

Odor-Free Comfort

Functions

  • HygroHeat™ Thermal Core

    Patented ceramic system reflects body heat using far-infrared (FIR) technology for self-sustaining warmth — without batteries or bulk.

  • Up to 8.8°C Warmer

    Lab-tested to retain significantly more warmth than standard Merino socks — for longer comfort in the cold.

  • Eco-Friendly Merino Blend

    Made with sustainably sourced Merino wool and performance yarns — soft on skin, lighter on the planet.

  • Natural Odor Control

    Merino’s natural antimicrobial properties help reduce odor — for fresher feet on long days.

  • Moisture-Regulating

    Engineered fibers actively manage sweat and moisture to keep feet dry and comfortable—even under sustained pressure.

    Advanced Technology for Unmatched Warmth & Comfort

    How HygroHeat™ Works

    •  Patented Thermal System
      HygroHeat™ is Laetts’ patented thermal technology that generates warmth through ceramic particles embedded directly into the sock structure.

    • FIR-Emitting Ceramics & Reflective Design
      These particles emit far-infrared rays (FIR) to support circulation and thermal
      retention during activity. The visible white line on the sock is woven with
      reflective yarns that return body heat inward—no batteries, no external power.

    • Performance Warmth, Up to 8.8°C Warmer
      Lab-tested to retain heat better than leading ski sock brands, Laetts’
      HygroHeat™ keeps feet up to 8.8°C warmer.

    • Lightweight Comfort Without Bulk
      All the warmth—without heavy layers. Designed to maintain comfort across changing activity levels while preserving fit precision and mobility.

    Learn more: HygroHeat Technology