Charlie Crow Grey Mouse Costume for Kids 4-10 Years 100% polyester Grey Mouse Costume for children. Three sizes to fit children aged 4-6, 6-8 and 8-10 years. Costume includes jumpsuit with attached hood, tail and a squeaker inside the mitten. Machine washable. 100% Polyester. Conforms to European & North American safety regulations. As a precaution keep away from fire. For more information view the product details below.