Ergodyne N-Ferno 6995 Foot Warming Packs, 3in x 10in, White, Case Of 20 Packs

Help keep your feet feeling good as the temperature goes down with help from these warming packs. The packs are made with all-natural ingredients that begin to heat up once they are exposed to oxygen. Designed to help keep your feet warm. Will fit inside most shoes and boots. All-natural ingredients for peace of mind. Activates instantly when the materials come in contact with the air. Works for up to 7 hours.