This is a hot water bottle from Onoe Manufacturing. It's lightweight and easy to carry. Perfect for warming up your futon during the cold season. For those concerned about dryness, a gentle heating solution for both people and the environment♪ ● Hot water bottles are eco-friendly and don't require electricity. ● The entire futon warms up, and the warmth lasts until the next morning. You can wake up to a comfortable morning. ● Save energy by using the remaining hot water from the hot water bottle (for washing your face, washing dishes, etc.). 【Caution: Low-Temperature Burns】 ※ To prevent low-temperature burns: ・Use hot water bottle burn prevention products. ・Change the position of the hot water bottle periodically. ・Wrap it in a thick towel or cloth. 【Safety】 It has the Product Safety Association mark, confirming its safety. You can use it with peace of mind. 【How to Use】 It has a simple design that you fill with hot water, providing warmth easily. - Color: Orange - Safety Mark: Product Safety Association Mark - How to Use: Fill with hot water