Are there any hot water bottles with patterns on the surface?

Commercially available hot water bags are divided into two types: smooth surface and patterned surface. The results of this risk monitoring heat dissipation efficiency test show that the heat dissipation effect of the patterned hot water bottle is more balanced, and it is not easy to cause skin burns after use. Experts recommend using a hot water bottle with patterns on the surface, which can effectively prevent skin burns caused by prolonged contact with the hot water bottle.