The Handwarmer Only Hot from MAC FISHING is handy and compact to put in gloves, jackets or trouser pockets. This small warmer keeps your hands and fingers pleasantly warm for up to 7 hours. Handy for anyone who spends hours in the cold for sports, recreation or work. Unpack and get warm - it's that simple! Contains natural substances (iron, water, salt, cellulose, vermiculite) and can be disposed of with household waste.