Let your child"s imagination roam with Hello Kitty when they"re tucked in this beautifully designed Hello Kitty "Argyle Kitty" Slumberbag. The shell is made of 100% polyester for incredible clarity of design, softness and ease of care. The fill on this product, which when zipped, measures 29x55, is 100% polyester fiberfill for loft and warmth. This item is machine washable.