This is a handmade kids' inner mask. The fabrics used are: Outer fabric: Liberty fabric Tana Lawn (Betsy) Lining: Double gauze (purple) It is made with two layers. Size: Approximately 12cm (height) x 8cm (width) when folded in half) (This size is for kids aged 5-8 years old ✨) Elastic is not included, but you can thread elastic through it! Each item is made with care, but please note that there may be slight variations due to it being handmade. There may be traces of chalk pen, etc., so we recommend washing it once before use. As this is a handmade item, it does not completely prevent infection (entry). Please discontinue use if you experience any skin abnormalities or if it does not suit your skin.