Personalized 1st Birthday Sloth Youth Long Sleeve T-Shirt. A cute little smiling sloth has fallen asleep on a big pile of birthday presents. Birthday balloons float in the air above it as it naps on its 1st birthday. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)