Featuring a double-walled vacuum-insulated structure made of 304 stainless steel, this tumbler offers long-lasting temperature retention—keeping cold drinks chilled and hot drinks warm for extended periods. Its classic contoured design ensures a comfortable grip and fits most car cup holders, making it ideal for travel. It comes with a transparent, spill-resistant sliding lid and a metal straw; the sliding lid covers the opening to prevent splashes and leaks (even when inverted), while the detachable metal straw allows for easy, generous sips of coffee, milk tea, or iced water. Available in a variety of styles—including minimalist solid colors, polka dots, and fun sticker-style prints—to suit diverse aesthetic tastes. The matte finish is durable, scratch-resistant, and easy to clean. Perfect for commuting, office use, or outdoor excursions, it is a versatile choice for all your daily beverages.