This Star Wars inspired hat is handmade to order by me. As pictured it is crocheted using predominately Simply Soft Yarn. The yarn is machine washable but I have to recommend hand washing to extend the life of your new favorite winter hat. I do use the knot method of switching yarn colors to insure a product that lasts longer. It is one size fits most. And colors are subject to differing slightly depending on availability of brands and dye lots. Because it's handmade to order please be patient and allow a 1-2 weeks before delivery. It may not often take that long depending on how many orders I have in. It is also possible though not likely that it could take slightly longer. Feel free to message me with questions about the delivery time of your order.