This square dry hot water bottle is ideal for relieving baby's colic and all the family's minor ailments. Infinitely reusable and easily transportable, the hot water bottle is also easy to use and can be applied both hot and cold (see the use and maintenance tips below). As the hot water bottle is not washable, using the cover is very practical because it protects the hot water bottle from traces of creams and other dirt. Sold with a cover 100% Oeko-Tex certified cotton / 100% ORGANIC flax seeds / Dimensions: 15cm x 15cm / Cover machine washable at 40°/