Little Hotties Air-activated Hand Warmers and Adhesive Toe Warmers Set, 5-8 Hours of Pure Heat. Natural, Environmentally Safe, Odorless and Air-activated. Perfect for Camping, Hunting, Fishing, Athletic Events, Skiing and Much More. Average activated temperature is 135 F (57 C) Odorless, environmentaly safe heat source Set includes 40 pairs of hand warmer and 30 pairs of toe warmers. Provide warmth and comfort in all cold conditions