Built for warmth without the bulk, the Baselite Heated Baselayer Top is your go-to first layer for cold days. With a lightweight crew neck design, soft knit outer shell, and smooth lining, it fits comfortably under any jacket—or stands strong on its own. Flat stitching and in-seam thumbholes provide a clean, secure fit, while 3 heat zones deliver consistent warmth where you need it most.

• Classic Base Layer Design with Heat: Light to mid weight base layer construction, easily fits under your favorit jacket and can used at work, home or those weekend outdoor activities.
• Crew Neck Design: Versatile pullover crew neck design can easily be worn over a t-shirt or used under a jacket when the weather turns really cold.
• 4 Adjustable Heat Settings with up to 9 Hours of Heat: Easily adjust temperature directly on the shirt using the integrated touch control button located on the lower front side of the shirt. Up to 9 hours of heat between charges (Up to 2.5 hours on high, Up to 3.5 hours on Med/High, Up to 5 hours on Med/Low, Up to 9 hours on Low) temperatures range from 90-135 degrees.
• Powerful Warmth Precisely Delivered: Mobile Warming® Heating Technology uses ultra-thin, flexible heat pads powered by our Powersheer® Mini, a 7.4V lightweight rechargeable battery. Strategically placed throughout the garment, these pads deliver consistent, adjustable warmth at the touch of a button—so you stay comfortable in any condition, without the bulk. 2 heat panels on the chest, 1 panel on the upper back.
• Compact Power Built for Warmth: The Powersheer® Mini 7.4v (2250mAh) Battery is our lightweight Lithium-Ion power source designed to maximize lightweight performance. With USB-C charging, an easy-to-read LED battery life indicator, and a compact size, it’s the perfect match for most 7.4v heated garments. For added heat times between charges, upgrade to our Powersheer XL (model MWCB74V04021) high capacity battery, sold separately.