This 1000ml stainless steel vacuum flask is engineered for reliable temperature retention, keeping your beverages hot or cold for up to 24 hours. Crafted from food-grade stainless steel with double-wall insulation, it ensures durability and superior heat preservation. The leak-proof design includes a secure lid and a convenient carrying strap, making it suitable for on-the-go use. Ideal for professionals seeking dependable hydration, this flask combines functionality with robust construction.