The Kaufmann Stainless Steel Flask Bottle in grey (500ml) is a high quality, stylish hydration solution designed to meet you on the go needs. Featuring unique double walled vacuum technology, this flask provides optimum insulation, keeping your drinks hot for up to 12 hours and cold for up to 24 hours. Its durable yet lightweight construction allows it to withstand rough handling, ensuring you always have an ice cold drink at hand, no matter the conditions. **The slim design fits most vehicle cup holders, making it perfect for travel. With a stainless steel inner lining, this flask is easy to clean, ensuring your drinks remain fresh and safe. Ideal for various activities, it fits seamlessly into your gym bag, car, bicycle, or backpack, making it perfect for long hikes, trekking, hot yoga classes, road trips, or any outdoor adventure.