With HOST®'s variable aeration, perfectly aerate anything from your lightest Pinot Noir to your most robust Bordeaux, all with the tilt of your bottle. HOST®'s instant aerator enhances any wine by softening tannins and releasing flavor. Aerate to soften tannins and release flavor. The more you "tilt" the more you aerate. Accommodates Mild, Moderate, and Heavy Aeration. Built-in stopper for preservation. Made from BPA-free plastic.