When the mercury dips and your digits are demanding a warm-up, get toasty with these rechargeable hand warmers. They'll deliver up to 16 hours of warmth so your fingers can stay frost-free through the worst cold, whether you're on the job, weathering winter sporting events or waiting for that trophy buck. They even serve as a power bank to charge your phone or other devices! Features a built-in light and turbo mode for instant heat when you need it most.