evo.com | Hestra Glove Liners > Your Hestra mitts are awesome, but, your hands still get cold when the winds are really blowing and the snow is coming down in icy sheets. Get yourself the battery-powered Hestra Heated Mitt Liners to layer under your mitts and all your frozen-finger problems will fade away. Made with a durable ripstop fabric, Fiberfill insulation and brushed polyester lining, these glove ovens feature three heat levels so you can stay in control when the weather changes. Windproof, Waterproof and Breathable Ripstop / Polyamide Fabric Fiberfill Insulation An insulating material made from polyester fiber. Rechargable / Replacable Batteries Integrated Heating Loops USB Charger | Hestra Heated Mitt Liner 2025 - 8 in Black | Polyester