Yaktrax 10-Hour Hand Warmer 30 Pack

Quantity: 30 pairs of single-use disposable hand warmers; each pair provides up to 10 hours of warmth Heat generation: Warmers produce heat through an oxidation process of iron filings, salt acts as a catalyst, and carbon helps to disperse heat evenly Activation method: Air activated warmers begin working upon opening Materials: Contains 6.73% activated carbon, 53.78% iron, 8.07% non-woven fabric, 2.23% polyester fabric, 2.89% sodium chloride, vermiculite, and water Use cases: Suitable for outdoor activities and cold conditions, such as camping, hunting, fishing, skiing, watching sports and outdoor events