The Borosil Thermo Vacuum Insulated Flask is designed for maximum convenience and performance. With a 1L capacity, it comes with a smart cap that doubles as a cup, making it ideal for travel or outdoor use. Crafted with a food-grade, rust-proof SS 304 stainless steel interior, it ensures safety and long-lasting durability. Its advanced vacuum insulation with copper coating keeps beverages hot or cold for up to 24 hours, so you can enjoy your drinks at the perfect temperature anytime, anywhere.