The Fieldsheer powered by Mobile Warming heating technology Backcountry Heated Vest is our new synthetic down puffer Heated Vest available in 2 color options and featuring a new low-profile 7.4-volt battery. With a Waterpell water-resistant nylon outer shell, and at its core, our tried and true Mobile Warming 7.4-volt heating system is enhanced with Primaloft synthetic down insulation. Primaloft is a down alternative made from recycled materials into ultra-fine insulative fibers. The Backcountry is stylish enough to wear on its own during day-to-day use, but light and amply compressible to also wear as a base layer under your favorite rain or snow Heated Vest. The Backcountry 7.4-volt heating system can provide heating temperatures ranging from 135°F on high to 90°F on low. On high, expect up to 2+ hours of heat, and on low it can heat up to 10 hours! Temperature control is simple with 2 ways to adjust the heat. First, the built-in waterproof touch control button. With a simple button push, it lets you choose from 4 instant heat settings with multi-colored LED indicator. Plus, we've incorporated Bluetooth control with our proprietary, free to download via App Store or Google Play Store, MW Connect app. Through the free MW Connect app, you can quickly toggle through all connected Fieldsheer powered by Mobile Warming technology garments and adjust individual heat levels to your liking. MW Connect app allows you to get real-time updates on battery levels and update your garments when new firmware becomes available. The Backcountry comes as a complete package with a 7.4-volt battery, charger, and stow bag. The Backcountry provides instant heat when the weather turns cold, keeping you outdoors and enjoying your favorite activity. The Backcountry Heated Vest is powered by our Powersheer 7.4-volt Rechargeable Lithium-Ion Battery (7.4V 2200mAh) - Reliable power in a compact streamlined package. The Universal Micro USB (5V @ 2A) to USB cable allows for convenient charging anywhere you go. The 7.4V DC output port is compatible with all of our 7.4V heated gear. Jacket Features: Lightweight 100% Nylon Outer Shell 100% Primaloft Synthetic Down Polyester-Filled Core 100% Polyester Inner Liner with ZapsheerZapsheer Anti-Static Technology 2 Waist Zipper-Close Hand Pockets Internal Storage Pocket Stow-Away Carry Bag Multi-Zone Heat Zones: Left & Right Chest, Upper Back Bluetooth-Enabled Wireless Control MW Connect Mobile App Compatible available on App Store or Google Play Store Integrated waterproof Touch Control Button 4 Selectable Instant Heat Settings Available in SM, MD, LG, XL, 2XL & 3XL Battery Features: Powersheer Rechargeable Lithium-Ion Battery (7.4V 2200mAh) Up to 10 Hours of Power Per Charge UL/CE certified USB Cable included Charge Time 3-4 hours Footnote: Charge time is based off using a USB-A wall charger that delivers 5V @ 2.1A. Includes: (1) Backcountry Heated Vest (1) Stow-Away Bag (1) Powersheer Rechargeable Lithium-Ion Battery (7.4V 2200mAh) (1) Micro USB Charging Cable Replacement batteries: Battery SKU: MW74V022 - 7.4v Powersheer Standard Rechargeable Battery (7.4v) Battery SKU: MW74V040 - 7.4v Powersheer XL Plus Rechargeable Battery (7.4v 4000mAh) Mobile Warming 7.4V Women's Backcountry Heated Vest