... arthritis pain 5.To recharge: place the hot pack in boiling water with cloth below,notes:prevent the ... crystallization, when the crystallization completed,squeeze the hot pack to make it soft and ready to use 7 ... rub it until it becomes soft, this hot pack gives soothing effect to rheumatic conditions of joints as ... temperature in winter. 8.Store: when boil the pack in water for 4-5 minutes until in ...