Bazinga Chemical Element Big Bang Sheldon Make sure it says "Ships from and Sold by Custom Shirts" above when selecting your size!!! THESE ARE ADULT MENS FITTED SHIRTS AND RUN TIGHTER THAN STANDARD FIT, PLEASE ORDER A SIZE UP IF YOU LIKE A LOOSE FIT Sport Grey 90% cotton/10% polyester, Heathers: 50 cotton/50 poly blends, Antiques: 90 cotton/10 poly blends Tapered sleeves and fit, Quarter-turned to eliminate center crease 4.5 oz, 100% cotton pre-shrunk jersey, Deluxe 30's Softstyle yarns