This black t-shirt features a humorous design referencing color blindness tests. The shirt reads 'IF YOU CAN'T SEE THE NUMBER YOU NEED TO' followed by five Ishihara-style circles. Underneath each circle are the words 'DRINK WATER', 'SLEEP', 'SHOWER', 'EAT', and 'SAVE WATER'. This playful graphic suggests that if you have trouble seeing the 'numbers' (which are actually just colored dots), you need to take care of your basic needs. Made from a soft, comfortable fabric, this t-shirt is perfect for casual wear and is sure to get a laugh. A fun conversation starter and a great gift for anyone with a sense of humor.