Thank you for viewing. This is a large beach ball. It's not a perfect sphere, so it's difficult to measure exactly, but it's approximately 74cm in diameter. I used it once indoors a few years ago and have stored it folded since then. I inflated it for this listing to check for air leaks (using a pump-style inflator). The inflator is not included, but you can probably use one sold at 100-yen shops. It hasn't been used much, but there is some dirt, so please refrain from purchasing if you are looking for a perfect condition item. I will deflate it and fold it up for shipping. - Shape: Beach ball - Damage: Some dirt