Personalized So Much Yarn Youth Long Sleeve T-Shirt. Youth Long Sleeve T-Shirt - White for knitters with a heart, ball of yarn and knitting needles says So Much Yarn...So Little Time. For anyone who loves to know and has a closet full of yarn. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)