FNDN™ Heated Skin-Fit Base Layer

Stay warm without the bulk in the FNDN™ Heated Skin-Fit Base Layer, built from ultra-lightweight, breathable stretch fabric that moves with you. This long-sleeve, hooded base layer with thumb-hole heated cuffs delivers the warmth of a parka in a slim, versatile design that layers easily under shirts, sweaters, or jackets—or works just as well on its own.

With soft-touch controls, you can select from four Radiant-X heating levels—High, Medium, Low, and Smart Pre-Heat—across targeted zones including the hands, back of the neck, and upper and center back. The unisex cut makes it a perfect fit for both men and women, providing all-day heated comfort whether you’re at work, on the slopes, or braving winter temps. Powered by the compact BEGO battery system, this base layer comes standard with two rechargeable batteries and can be expanded to four for double the runtime.

To power on, plug the 2 batteries into the same side of the shirt. For a more relaxed fit, consider sizing up.

[ Runs true to size ] 

Features

• Ultra-lightweight, moisture-wicking stretch fabric with heated hood, back, and thumb-hole cuffs

• Four Radiant-X Core Heating Levels: High, Medium, Low, and Smart Pre-Heat

• 4–6 hours of runtime with two included BEGO batteries; option to add two more for extended warmth

• Small, lightweight BEGO high-performance battery system

• Universal USB charging capability

• Fully machine washable (remove batteries before washing)

Fabric

• Front panel: 90% Polyester / 10% Spandex

• Back panel: 65% Polyester / 25% Cotton / 10% Spandex

Includes

• 1 FNDN™ Heated Skin-Fit Base Layer (hooded, long sleeve, thumb-hole cuffs)

• 2 BEGO 3.7V Li-Ion rechargeable batteries (expandable to 4 total)

• 1 USB dual battery charging cable

Care Instructions

• Machine wash on delicate (remove batteries first)

• Do not bleach

• Do not machine dry

• Do not iron
  

Smart Pre-Heat Mode

When first powered on, the LED glows red and slowly flashes during a 5-minute pre-heat cycle. After pre-heating, the shirt automatically shifts to medium to conserve battery life. To bypass Smart Pre-Heat, simply press the button again.