• Laetts men’s ultralight ski socks, over-the-calf length, featuring Merino wool with patented HygroHeat™ warmth technology and light cushion on the sole for improved comfort inside ski boots; shown in blue and charcoal stripe design.
  • Laetts men’s ultralight ski socks shown flat, over-the-calf length, in blue and charcoal stripes with light sole cushion. Made with Merino wool and patented HygroHeat™ thermal technology for lightweight warmth and comfort inside ski boots.
  • Close-up detail of Laetts men’s ultralight ski socks showing the Merino wool knit texture and cushioned sole area. Highlighting patented HygroHeat™ thermal yarns that retain warmth while keeping the socks thin and lightweight for ski boot comfort.

Ultralight Snow — Light Cushion

Ultralight Snow — Light Cushion

Merino Thermal Socks — Warmth Without Bulk

$37.95
$37.95
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 Ultralight Snow sock with Light Cushion construction pairs a fine-gauge Merino blend with patented HygroHeat™ for moisture-responsive warmth without bulk. A slim, precision-oriented fit preserves speed and edge control, while light underfoot terry adds subtle impact protection—maintaining a high-performance feel without going fully zero-stack.

Designed primarily for ski use, this construction offers a refined balance of precision and comfort, making it a preferred choice for skiers who want ultralight responsiveness with a touch of cushioning—especially those who find no-cushion builds too unforgiving. The Merino blend wicks moisture, resists odor, and adapts across changing activity levels to keep feet comfortable and focused in cold conditions.

Learn more: Merino Thermal System

Attributes

Shaft Height:    Over-the-Calf

Weight:            Ultralight

Cushion：        Light-cushion

Form：             Anatomic

Style：             Sporty

Item Number：L202413

Fibre Content

32% Wool, 26% Nylon, 23% Rayon, 16% Acrylic, 3% 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.

Laetts men’s ultralight ski socks, over-the-calf length, featuring Merino wool with patented HygroHeat™ warmth technology and light cushion on the sole for improved comfort inside ski boots; shown in blue and charcoal stripe design.

Ultralight Snow — Light Cushion

$37.95
$37.95
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.

  • Natural Odor Control

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

  • Ultralight Thermal Build

    Designed to deliver high warmth-to-weight ratio — stays light in performance boots without sacrificing heat.

  • Moisture-Regulating

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

  • Adaptive Fit Support

    Comfortable for skiers with reduced strength, post-surgery needs, or limited dexterity — boot entry takes less effort.

  • Eco-Friendly Merino Blend

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

    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