The Kaufmann Stainless Steel Flask Bottle in grey (750ml) is a high quality, stylish hydration solution designed for both functionality and durability. Utilizing unique double walled vacuum technology, this flask ensures optimum insulation, keeping your drinks hot for up to 12 hours and cold for up to 24 hours. Its durable yet lightweight construction means it can withstand rough handling while still providing refreshing beverages when you need them most. The slim design fits most vehicle cup holders, making it a practical choice for on the go lifestyle. **The stainless steel inner lining allows for easy cleaning, ensuring your flask remains hygienic and ready for use. Perfect for a variety of activities, it can be conveniently carried in your gym bag, car, bicycle, or backpack, making it ideal for long hikes, trekking, hot yoga classes, road trips, and any outdoor adventure.