JINX Portal 2 Men's For Science Premium Cotton T-Shirt 100% combed ring-spun cotton; 30/1 Officially licensed by Portal 2; designed and created by JINX GLaDOS (Genetic Lifeform and Disk Operating System) says "For science ... you monster" from Portal 2 video game Fine lightweight 4.3 ounce jersey Features slim-fit body Machine wash with like colors; tumble dry on low