Chemistry and skulls go together like Dr. Jekyllhyde and Mr. HYDE. Drink the vial, let the monster loose. 

Available sizes
Small, Medium, Large, XL
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Lightweight and soft, the shirt feels like one you've had your whole life. 3.7 oz. Muscle tee is 52% Polyester, 48% Viscose. Crop tank is 52% airlume combed and ring spun cotton, 48% poly jersey.