Made out of Polyester the little water bottle shaped heating pack comes with a little cover in white.
For the therapeutic cheating of muscles, to activate you will be required to flex the metal disk inside the hand warmer, we always recommend first manipulating the disk to the very edge of the warmer so you can get a better grip. Flex this metal disk until the pack starts to crystallise. Whilst this is happening, gently knead the hardening crystals to spread them out and use the full capacity of this pack.
DIMENSIONSHeight: 11.5 cm