This dry flaxseed hot water bottle takes care of your little sores. Completely removable, it can be used hot or cold. - Normandy flax seeds - 100% cotton - Size 20 x 15 cm - Handmade in Normandy * As a hot compress: The hot water bottle is applied locally to soothe tension in the neck, shoulders, knees, stomach or joints, but also as a hot water bottle to warm the feet and hands. Heat the hot water bottle in the microwave for 1min-700W-Max and check on your skin to make sure it is not too hot * As a cold compress: To relieve knocks, bruises, sprains, inflammations, migraines... Put the hot water bottle in a freezer bag beforehand and then in the freezer for about twenty minutes. /!\ Do not wash the hot water bottle with the seeds, only wash the cover at 30°C. Do not leave the hot water bottle unattended while heating.