Thank you for viewing! [Product Description] This is a set of 10 yarn cores. ^_^ Perfect for crafts and handmade projects, especially with summer vacation coming up. How about using them for school assignments? I enjoy making handmade items with yarn, so I expect to have many more of these available. ^_^ [Size] Approximately 5cm in diameter x 7cm in length [Shipping Method] Shipped via Takkyubin Compact! Waterproof measures will be taken to prevent them from getting wet! I will continue to create and sell many handmade items, so please look forward to them. ^_^ If you have any questions, Please feel free to ask in the comments!!! Thank you for your consideration!