Heatbag is soft and rounded, with an outer double layer of recycled foam covered in soft jersey fabric. The outer layer is washable. The inner core is made of natural clay (so you don’t need water to use it) and lined with smooth, durable nylon.
The double-layered recycled foam in the outer layer focuses the heat release to the targeted spot.
The inner core is made of natural clay because of its origin and after the heating testing, as it offers a long-lasting heat effect. It also helps reduce water waste and avoids one of the main problems of regular hot water bottles: the faulty products due to rubber damage and injuries caused by burning.