Personalized Knit-A-Holic Youth Long Sleeve T-Shirt. Youth Long Sleeve T-Shirt - White for die hard knitters has a retro martini glass with yarn for the olives and says KNIT-A-HOLIC. A little knitting humor with a twist! youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)