Ivivva Girls Blue Fly Tech Seamless Long Sleeve Crew Neck T-Shirt. Stripes on sleeves. Fitted. Thumb holes. Tip of logo coming up shown in photos. Stretch. Nylon, polyester, elastane, x-static nylon blend. Size 12. Armpit to armpit: 13.5". Armpit to end of sleeve: 19.5". Length: 22".