100% acrylic Soft green colored yarn used It's stretchy, so I think it can be worn by children from elementary school age to adults (*^^*) It's going to get really cold soon, so a warm knit hat is convenient to have! How about it as part of your fashion?! ^^ This is handmade from a hobby. Thank you for your understanding and consideration m(*_ _)m *The bear is a model and is not included^^; I will compress it as much as possible when shipping. Please adjust it after arrival. 999