• 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

HygroHeat™ Thermal Core

Merino Thermal Platform

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 technology reflects body heat using far-infrared (FIR) energy to support self-sustaining warmth without batteries or bulk.

  • Balanced Warmth Build

    Engineered for extended days in cold conditions, this midweight construction combines enhanced warmth and cushioning with a responsive fit inside performance boots.

  • Balanced Comfort Build

    Designed for all-day outdoor comfort, this balanced construction combines warmth, cushioning, and breathability for changing activity levels and conditions.

  • Ultralight Thermal Build

    Engineered for maximum warmth-to-weight performance, this lightweight construction maintains a thin, responsive profile for precise fit inside performance boots.

  • Precision Comfort Build

    Targeted cushioning provides underfoot comfort and impact protection while maintaining a precise boot fit, responsive control, and natural movement.

  • Maximum Cold Protection

    Built for extreme cold conditions, this heavyweight construction delivers maximum insulation, cushioning, and protection for prolonged outdoor exposure.

  • Moisture-Regulating Merino Comfort

    Merino fibers naturally manage moisture and odor while engineered fibers help maintain comfort during extended activity.

    ADVANCED MOISTURE-RESPONSIVE THERMAL TECHNOLOGY

    How HygroHeat™ Works

    HygroHeat™ uses ceramic-enhanced fibers engineered to generate and retain warmth through moisture-responsive technology. By converting natural body moisture into heat energy and reflecting far-infrared (FIR) radiation, HygroHeat™ helps maintain comfortable warmth without batteries, bulky layers, or external power. The result is lightweight thermal performance designed to keep feet comfortable across changing activity levels and conditions.

    Learn more: HygroHeat Technology

    Engineered Merino Thermal Foundation

    Built on the LAETTS Merino Thermal System, this engineered wool foundation combines the natural benefits of merino with advanced performance fibers to deliver breathable warmth, moisture management, and lasting comfort. Designed to work together with LAETTS thermal and fit technologies, it helps maintain balanced performance across changing conditions.

    Learn more: Merino Thermal System