Microwave-Heatable, Easy Hot Water Bottle! Includes a dedicated cover The box will be folded and sent in simple packaging via postal mail. Price: ¥4,495 [Color] Pink Penguin How about it for warming up, menstrual pain, lower back pain, stiff shoulders, etc.? This hot water bottle is easy to use, just heat it in the microwave, and provides a comfortable warmth of about 42°C for approximately 8 hours (when used inside a futon with the cover on). [Size] ・Body: Approximately 17 x 14 x 2 cm ・Cover: Approximately 25 x 20 cm [Weight] ・Body: Approximately 520g [How to Use] ・Microwave: 600W or less: Approximately 4 minutes 700 (800)W or less: Approximately 3 minutes 30 seconds 900 (1000)W or less: Approximately 3 minutes * Can also be heated in a water bath. This product was also sold on Shop Channel. Thank you.