This is a product for cooling a baby's armpit when they have a fever using an ice pack. It's a type where you put the ice pack inside a pocket. It's made of a very soft towel-like fabric. Babies often get fevers, and cooling the armpit can help lower the temperature. This item supports children suffering from fever by helping to lower it as quickly as possible. There is no instruction manual. The method of attachment may be difficult to understand. Please pass your arm through the loop and place it under the armpit.