This is a muffler for kids. It's soft and has a good feel against the skin. We have multiple items in stock, so we will ship a brand new, unused one separate from the one opened for photography. I think it can be used for children from 0 years old to lower elementary school age. If you have any questions, please feel free to comment. We also have different colors available, so please take a look at the product page if you'd like. - Material: Knit Thank you for viewing.