Yaktrax Travel Pack includes disposable warmers that provide long-lasting warmth to help keep your body warm when the temperature gets cold. Once opened, these odorless and environmentally-safe warmers begin working within minutes. Yaktrax Warmers contain natural ingredients including iron powder, water, salt, activated charcoal, and vermiculite. Yaktrax Body Warmers are ideal for keeping warm when camping, hunting, fishing, skiing, watching athletic events, and more. Pack includes 8 pairs of Hand Warmers, 8 Hand & Body Warmers, and 8 pairs of Toe Warmers.