Although it says "baseball," I received this from an acquaintance who played baseball, and I've only used it 2-3 times as running wear. The person who gave it to me said they had never used it. If you buy it together with the short-sleeved Under Armour shirt, it's 900 yen for both. If you'd like to buy them together, please comment first. Navy high-neck long-sleeved shirt made of breathable polyester material. - Color: Navy - Style: High neck - Sleeve Length: Long sleeve - Material: Polyester - Features: Breathable fabric Thank you for looking.