Teenage Mutant Ninja Turtles Kids Thermal Long Sleeve Tee (Small) TMNT kids layered long sleeve tee features Leonardo, Raphael, Michelangelo and Donatello heathered green tee with brown thermal cuffed long sleeves, crewneck, solid back 60% cotton 40% polyester, 100% cotton sleeves. Officially licensed. Kids size Small: 16" flat across chest, 17" sleeves, 20" long.