KIU Yakult Swallows Collaboration UV Rain Hat [Tsubakuro] Design Purchased at the Swallows Shop. A hat in collaboration with KIU. Tsubakuro design. After purchase, I tried it on once after washing my hair. It didn't suit me very well, so I kept it stored. I was keeping it, thinking I might use it on a rainy day, but I don't think I'll have the opportunity to wear it, so I'm putting it up for sale. Therefore, I am selling it as a near-new item. (No tag)