Diameter: Approximately 3cm (inner diameter approximately 26mm) Length: Approximately 30.5cm This is for professional use, so it's sturdy. Please use this for something fun! This summer: For keeping your children occupied... For those looking after grandchildren... Wondering if you can do something fun? We will take measures to prevent water damage before shipping. Instant and silent purchase is welcome! Sorry, no price reduction for single items. * Those who can pick up the item can have it for 500 yen. This is in Kyoto City, near Toji Temple. We will provide the exact location after purchase. #Gymnastics #Events #Recreation #Core of professional wrap #Handmade toys #Materials #Crafts #Nursery school #Kindergarten #After-school care