Fieldsheer Women's Merino Heated Base Layer Long Sleeve Shirt - Designed for versatility, wear this as a base layer to deliver unparalleled levels of warmth and core comfort. Heavyweight Hooded Base Layer Merino Wool Contour Fit Hoodie for extra warmth In-seam Thumb holes on cuffs Pockets – Waist / Chest Multi-Zone Heat Elements: 2x Chest & 1x Back MW Connect Mobile App Compatible Integrated Touch Control Button 4 Selectable Heat Settings Powersheer Standard 7.4volt Rechargeable Lithium-Ion Battery Up to 10 Hours of Power Per Charge Universal USB Charging Input UL/CE certified USB Cable included Charge Time 3-4 hours Style: MWWT14010