Tuck a chubby pink pig (buta, 豚 en Japanese) into your bento to keep your meal fresh for up to 3 hours.
Place the ice pack which contains cooling gel into the fridge before going to bed. Before leaving your home in the morning, tuck the ice pack in your bag next to or inside your lunchbox.
You can also use this ice pack to keep your body cool when you're having a temperature, hot flashes, headaches or fever.
After a long day's walk, you can place it on your tired legs to help you relax.