The Mini Hot Heart Handwarmers are filled with a clever liquid and a little metal switch; when you click the switch, the liquid solidifies and heats up.

It's a great little gadget that you can use over and over again. You just boil the bag up and it re-liquefies, ready for the next time you need a warm-up. 1 red and 1 white heart.

FEATURES:

- Size 3" x 3.2"

- warms to 130 °F in 5 seconds

- stays warm for around 45 mins

- recharges in minutes