One-touch pop-up lid design: A top-press snap-on mechanism allows for quick and easy one-handed opening of the drinking spout, making it convenient for drinking while traveling or exercising. The built-in stopper and compact spout prevent choking. The cup lid features a metal hanging ring paired with a matching braided wrist strap. The thickened, durable strap allows for easy carrying, attaching to bags, carabiners, or bicycle handlebars, freeing up your hands for convenient portability. Double-layer vacuum insulation prevents heat exchange, ensuring long-lasting temperature control throughout the year: Hot: Keeps hot water, herbal tea, and coffee warm for extended periods, perfect for enjoying hot drinks in autumn and winter; Cold: Keeps ice water, sparkling water, and iced drinks cold for longer periods, ideal for cooling down during summer workouts or shopping.