Chikawa Water Seal - 1 sheet The inside is hollow, but it's filled with water, giving it a nice weight and making it very cute. This is a new, unused item, but since it was shipped from overseas, there may be some slight warping or scratches on the packaging. Please be aware of this. After taking waterproof measures, I will put it in an envelope and ship it anonymously. Ships within 24 hours. Instant purchase is welcome.