Made from cotton and wheat from organic farming, the ecological hot water bottle provides you with calming and comforting heat without the risk of burning. It exists in 11 different colors! With its 4 compartments, it can be used to warm you in winter, but also to relieve muscle pain or numbness . The ecological hot water bottle heats up in the microwave for only 2 minutes , and provides you with a heat source for approximately 40 minutes. Finally, the ecological hot water bottle can be used to cool, in this case it must be placed in the freezer for 60 minutes to benefit from its freshness afterwards.