14 Disposable Foot Warmers Long-lasting Safe Natural Odorless Air Foot Warmers Self-Heating Anti-Cold Foot Warmers Quantity: 14/42/84 pieces. Size: 7*8.3cm Heating temperature: 55C Shelf life: 3 years Time: 8-10 hours Application: Housing Ingredients: iron powder, salt, activated carbon, etc. feature: * Essential to keep warm in winter * Disposable hand warmers provide daily warmth. It is the ideal device when the temperature is getting colder. It's designed for your arms, legs and body. * Odorless, one-time use, do not apply directly to the skin. * When to use: Jockey Club, Outdoor Sports, Hunting and Fishing, Camping and Hiking, Yard Work, Jogging or Walking with Pets. * Convenient, safe, practical and portable. * hint 1. Please don't stick it directly on the skin, the product must be sticked outside the socks. 2. Do not use before going to bed. 3. Please avoid using it in the same place for a long time. 4. Children (under 6 years old), disabled people or people with sensitive skin should pay more attention to low temperature burns. 5. Pregnant women and young children are prohibited from using this product. The package includes: 14/42/84 Disposable Foot Warmers