【Showa Retro】 A nostalgic, old-fashioned hot water bottle! Comes with a cover. Made of polyethylene, but it's a very sturdy material. Fill it with hot water and put it in your futon to stay warm (^▽^) ◆Recommended: Place it in the middle of the futon, near your back or lower back, beforehand. When you get into bed, kick it with your feet to move it towards your feet. This will warm your whole body, and you'll be able to fall asleep comfortably♡ Size: Approximately 30 x 22 x 9 cm, including the handle. Please allow for some error due to amateur measurements(^^; #ShowaRetro #Retro #HotWaterBottle #Yutanpo