This specially-shaped, reusable heat pad with cover provides instant heat with just one click to activate and comes complete with a soft, flexible cover with hook and loop tape fastening for a perfect, secure fit and hands free use.Designed to fit comfortably around your lower back or tummy, but also suitable for the neck and shoulders when used without the cover, this instant heat pad is ideal for targeting aches and pains, improving poor circulation and soothing injuries. When you \'click\' and bend the metal disc inside the pad, it heats the whole Heat Pad in seconds, with no other power source required. To reuse the heat pad, heat in gently simmering water (do not boil) to melt the crystals back to the original liquid state, ready for your next click!