Personalized Cognitive Science Brain T-Shirt. Cognitive science brain T-Shirt - Silver are a fun way to show off your smarts with style! This cerebrum with a happy frontal lobe makes a funny gift for students or doctors of cognitive or neuroscience! Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.