This is a gym uniform from Fashioner, a brand that has been loved for generations. I used to wear it when I was a child too (^^) Now my child uses it. The reason I choose this one is that the fabric is moderately thick and sturdy. Among the many I've seen, this one is the thickest, and I like that it doesn't show the color and lines of the skin or underwear too much. I purchased it on Amazon (¥2,700). The product in the image is a gym uniform from Fashioner, a brand of Tsuruoka, a major school uniform manufacturer. Product Features Material: A blend of 70% cotton and 30% polyester, which feels good against the skin and has excellent sweat absorption and quick-drying properties. Functionality: It has shape-retention processing, making it resistant to deformation and pilling. Design: It's a simple white crew neck (round neck) type, and some models have a pocket on the left sleeve. Purchase and Sales Information It is widely available on major online shops such as Amazon, Rakuten Ichiba, and Mercari. New Price Range: Approximately ¥1,350 to ¥3,900 (depending on size and whether it's long-sleeved or short-sleeved). ● Size: Tagged size S ● Material: 70% cotton, 30% polyester, using Toyobo Esmode U yarn. Absorbent, quick-drying, excellent shape retention, resistant to washing, and less prone to pilling. ● Condition: New, never tried on ● Other: Pocket on the left sleeve Color: White Sleeve Length: Short sleeve This item has been stored at home. If you are satisfied with the price, please consider purchasing it. Thank you for looking.