FLEXIBLE FLAMELESS HEATING OR COOLING DEVICE

摘要

A heating or cooling device having a sleeve adapted to fit on or over an article to be heated or cooled, the sleeve having an outer layer and an inner layer, and at least one heat- or cold-generating chemical contained between the outer layer and the inner layer, where the device is constructed of a flexible material, and where the device has a re-closable seal to enable water or other chemical to be added to the at least one heat- or cold-generating chemical.