These festive glasses are safe for poolside and other outdoor settings. While they look and feel like glass, they're actually made of a high quality polycarbonate. The glasses are also ideal for indoor settings where safety can be an issue. The team behind Impulse! believes there’s nothing better than getting together with friends and family, mixing a concoction of choice, and sitting back to enjoy. These glasses, trays, and accessories will enhance your good times, whether your beverage of choice is a dry martini or sparkling water.