FNDN™ Heated 3.7V Base Layer Socks


Never deal with frozen toes again. The FNDN™ Heated Base Layer Socks are designed as the thinnest, form-fitting heated socks on the market—slim enough to wear under or over other socks while still delivering powerful warmth all day long. Built with Radiant Core Heat™ technology and powered by the ultra-compact BEGO rechargeable battery system, these socks are lightweight, durable, and ready for any cold-weather challenge.

With four adjustable heat levels—including battery-saving Smart Pre-Heat mode—these socks provide up to 4.5 hours of runtime on a single charge. They can also be connected directly to FNDN Heated Base Layer Pants (sold separately) for seamless control from a single waist-mounted module. Perfect for men and women alike, these socks offer comfort and relief for poor circulation, arthritis, Raynaud’s Syndrome, or simply staying warm through long winter days.

Features

• Ultra-thin design to wear under or over other socks

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

• Up to 4.5 hours of continuous runtime

• Small, lightweight BEGO high-performance battery system

• Universal USB charging

• Compatible with FNDN Heated Base Layer Pants (sold separately)

• Machine washable (remove batteries before washing, lay flat to dry)

Fabric

• 100% Acrylic

• Soles: 65% Polyester / 25% Cotton / 10% Spandex

Size Information

• S/M: Men’s 4–9.5 / Women’s 6–11

• L/XL: Men’s 10–14

Includes

• 1 pair of FNDN™ Heated Base Layer Socks

• 2 BEGO 3.7V Li-Ion rechargeable batteries

• 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. Afterward, the socks automatically switch to Medium to conserve battery life. To bypass Smart Pre-Heat, press the button again.

Designed in Detroit