Splash About This is a two-piece set of baby swimwear and a hat. Made of wetsuit material, it provides warmth and is recommended for baby swimming in the coming cold season. My family quickly entered summer, so we didn't use it much, and I think it's a very clean item. Size: Cap → M (18 months and up) Swimsuit → 18 months - 30 months Please note that it will be folded for shipping, so please understand that there may be some creases.