Brighten up your day with this set of Watermelon Acrylic Tumblers with matching straws. With two sizes, the set features a double wall design that keeps your favorite drinks chilled for up to 6 hours. Simply twist off the tops of these cups for easy filling and cleaning. The straws stay in place with the o-ring design. Made of acrylic, these tumblers should be hand washed only to preserve the watermelon design. Not microwave safe.