This is a striped cotton jersey T-shirt. The navy and red design is cool and recommended for summer outings. - Material: 100% cotton - Purchased at a flagship store in New York for approximately 7,000-8,000 yen - Size: Kids M, 10-12 years old (equivalent to Japanese size 150) Worn for one season, but carefully maintained, so it's in very good condition. Thank you for looking.