This 17oz stainless steel double-wall vacuum insulated tumbler is designed to keep your drinks hot for 6 hours and cold for 6 hours, making it perfect for on-the-go use. The screw lid with an internal straw allows for easy sipping, while the sleek black and brown colour imitating the duracell battery adds a fun touch. Made from durable stainless steel, this tumbler is both practical and high-quality, making it a must-have for anyone looking for a reliable drinkware option.