Personalized Santa Hat Brain Adult Hoodie Sweatshirt. A happy brain wearing a Santa hat is a humorous winter holiday gift design for psychologists, neuroscientist, neurologists, neurosurgeons and medical students. Elevate your comfort with this classic adult hoodie, a perfect blend of style and practicality. Crafted from soft, high-quality fabric, it features an adjustable drawstring hood, and a spacious front pocket. Ideal for layering or wearing on its own, this hoodie is a versatile staple for casual outings, workouts, or relaxing at home.