This Royalford Glass is spill-proof hydration to go! Made from durable, BPA-free acrylic construction and features thick wall insulation to keeps drinks cold longer. The inner and outer walls are clear, offering the ability to see the contents of party glass. Features a threaded-on lid with patented attached straw for easy drinking.This glass is perfect for home functions, parties, birthday parties, and social occasions. This creative glass with straw will certainly add fun and style to your party, and keep your friends amused. A gift for men and women, functional sipping glass. Available in a variety of colors!