Wile your days away in a happy haze with the Serotonin black t-shirt from DREAM The tee's all-black colorway and short-sleeved silhouette keep it laid-back and comfortable, while screen-printed, blue-tinted imagery of several warped-looking smiling faces, molecules, and script reading "Serotonin" sit on the shirt's back, lending it some slick chemical-laden style.