The all-new Insolator Battery Heated Vest takes the warming power of SOLARball® insulation up a notch with iWarm heating elements for up to 10 hours of extra warmth per charge! 3 heat settings (warm, warmer, warmest) let you dial in your comfort level, while 4 pockets truck your stuff and include a USB-C port to hold compatible battery packs you can swap out as needed. Whether you’re working outside all day or just need that extra edge against brutal cold, this vest brings the heat when you need it most.