Treets Heat Pit Eco Elongated has an insulating effect that ensures that heat is retained for a long time and is released very slowly to the environment. In contrast to the hot water bottle, the heat pit does not extract heat from the body after cooling. Heat pit forms itself to the body and is a 100% natural product. This pillow can be used during cold winter evenings, with muscle or abdominal pain, with back or neck problems. The heat pit is also ideal for hand or foot massage and where the mobility of the muscles needs to be activated. Heat pit can also serve as a cold compress. In that case, place the cushion in the freezer or in the refrigerator.