Combed cotton Enzyme 30s is made from 100% combed cotton fiber which is processed on the combing machine. It also uses natural protein during the production process at the fabric washing stage, making this Combed Cotton Enzyme t-shirt material has a very smooth and hairless surface. The enzyme treatment process on this Combed Cotton t-shirt will not cause irritation or be harmful to the cloth user, so the cloth will still be comfortable to use by all ages, including children.