THAW USB-C Rechargeable 2K Hand Warmer 2 Assorted Colors. Nothing keeps you from enjoying the outdoors more than cold hands; cold, stiff fingers make even the simplest tasks nearly unbearable. Gives your fingers much needed relief and easily fits in your pocket, so it's always with you. The simple one-button control activates the double-sided heating so you can feel the warmth on your full grip. It heats up to 113-degrees Farhrenheit and lasts up to 4 hours, and the 2,000mAh lithium-ion battery is easily recharged with the USB-C port. The integrated 20 lumen LED light can be activated even while the heat is on, so you can illuminate your task without freezing your fingers.