Crafted from premium durable borosilicate glass, each cup withstands extreme temperatures from −68°F to 212°F, seamlessly transitioning between steaming hot beverages and ice-cold refreshments. The set arrives complete with natural bamboo lids and reusable glass straws—an eco-conscious that eliminates single-use waste while maintaining sophisticated aesthetics. Dishwasher-safe construction with smooth, thick glass walls ensures lasting durability, while the classic, refined design invites personalization and creative decoration for a uniquely personal touch.