Ichiban Duck Original Mask Case & Tissue Case A polypropylene mask case featuring illustrations of a winter scene and ducks (Ichiban Duck). - Size: 22 x 11.5cm - Material: PP (polypropylene) - Country of Manufacture: China - Product Name: Original Mask Case Thank you for viewing. This was a gift, but I'm selling it because I don't use it. Although it is unused, it has been stored at home, so I don't think it's perfect. Please understand this before purchasing. 19g110