Thermal Heated Base Layer Shirt for Men & Women - Large Size | Winter Warm Underwear for Cold Weather | Perfect for Skiing, Hiking & Outdoor Activities

This lightweight garment will not only provide you with soothing heat but also wicks away moisture to keep you dry making it the perfect base layer choice. Constructed with a Micro polyester/spandex material with a brushed fleece lining that contributes to making it a really comfortable fit. The Zero Layer heating system uses two 7v heating panels concentrating heat to the middle of the back to help keep your core warm. Approximate Battery Run Time per Power Level: 100% High – 3.5 hours 75% Med/High – 6 hours 50% Medium – 10 hours 25% Low – 15 hours Volt Base Layer Sizes: Small: 36-37" chest Medium: 38-39" chest Large: 40-42" chest X-Large: 43-44" chest XX-Large: 45-48" chest

Provides over 170 degrees of soothing heat on high for 2+ hours and up to 8 hours on the lowest setting

Micro polyester/spandex material with a brushed fleece lining

A large four-panel heating system centered in the back of the garment.

Built-in 4 level microprocessor controller to select desired heat output

Includes 7.4v 2200mAh battery and charger