Personalized Santa's Little Helper, Sleigh, Reindeer, Stars Youth Long Sleeve T-Shirt. Cute, fun and adorable design with sleigh, reindeer, stars and text 'Santa's little helper'. Modern and trendy gift, perfect for the Christmas lover in your life. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)