Yaktrax 8-Hour Hand Warmers 10 pair of single-use disposable hand warmers; each pair provides up to 8 hours of steady warmth Safe, natural heat; odorless and environmentally friendly Air activated warmers begin working upon opening Ideal for keeping hands warm when camping, hunting, fishing, skiing, watching sports and outdoor events, and more Dimensions per warmer: 3.5 x 5 x 0.25 inches