The vimwing Rechargeable Dual-Sided Hand Warmers with Case 2-Pack 14000mAh N2 is a high-quality electric hand warmer designed for outdoor activities like hunting, camping, and hiking. With dual-sided heating and an activated temperature of 100 °F, these hand warmers provide 8 hours of effective duration. The sleek black and silver color design, along with the lightweight plastic material, make them easy to carry and use. The included charging case and rechargeable feature ensure that you can keep them powered up for your next adventure. New in box.