Utilizing MobileWarmer's new Powersheer Micro 3.7-Volt Lithium-Ion battery, MobileWarmer's new Thermal Heated Socks provide long-lasting warmth for up to 10 hours on a single charge. MobileWarmer's Thermal Heated Socks are a thoughtful blend of comfort, cost, and Fieldsheer’s Mobile Warming Technology. Since 1978 Fieldsheer has been designing and manufacturing rugged, performance-driven gear for avid outdoor enthusiasts, motorcyclists, workers, and more. MobileWarmer's Thermal Heated Socks take all-day comfort to the next level. Whether you’re in deep backcountry powder or an early morning job site, keep your feet warm and improve circulation to avoid stiffness, muscle fatigue, and soreness. With heavy cushioning in key areas and heating elements under the front of the foot, you can avoid the discomfort and numbness that come with being outside in cold conditions. The cotton/poly blend is breathable, and the calf length provides full coverage.

Sock Features:

• 91% Cotton, 8% Nylon, 1% Spandex
• Cotton/Poly/Other blend
• Calf Length
• Comfort Toe
• Heavy Cushioning in Key Areas
• Heat Under Toes Only
• NEW Powersheer Micro 3.7v Battery
• Up to 10 Hours of Heat
• Universal USB Charging Input

Battery Features:

• Powersheer Mini Rechargeable Lithium-Ion Battery (3.7V 2200mAh)
• Up to 11 Hours of Power Per Charge
• UL/CE certified
• Battery size: 8in x 1.1in x 0.8in2.8in x 1.1in x 0.8in
• AC wall charger included
• Charge Time 3-4 hours

* Footnote: Charge time is based off using included AC wall charger

Includes:

• Pair Standard Heated Socks
• Powersheer Mini Rechargeable Lithium-Ion Battery (3.7V 2200mAh)
• AC Dual Charger