Dokinchang and Kokinchang Okiagari-koboshi (Roly-Poly Toys) Made of vinyl. They are in near-new condition and clean, but have been stored for about 7 years. When I inflated an Anpanman toy with similar conditions, I couldn't find any holes, but the air leaked out. Therefore, I'm unsure about these two as well (as I don't have an air pump). Please purchase with the understanding of the above. Thank you.