SAFE MATERIAL: Thermal mugs are made of high-quality 304 stainless steel, robust and durable, non-oxidizing, corrosion-resistant, odorless, and safe for drinking. The insulated bottle with a practical twist-lock cap does not have a breakable glass insert, making it ideal for outdoor use. KEEP HEAT AND COLD: The stainless steel drinking bottle ensures that your drink stays cool and refreshing for up to 12 hours or hot and warm for up to 12 hours. Perfect for hot or cold weather. This excellent insulation means the bottle will never sweat or get hot to the touch. LEAK-PROOF AND NON-SLIP: Double lid closures on the thermos bottles and silicone rubber seals ensure no leaks, even if the bottle is knocked over or shaken. So you can safely place it in your backpack. In addition, the bottom of the bottle is equipped with a non-slip silicone base that prevents slipping. THERMOS CUP WITH 3 LIDS SET: The 500 ml thermos flask is ideal for storing all drinks: water, tea, coffee, milk, and more. It features a practical lid design that doubles as a cup. The sports drinking bottle comes with a carrying handle, making it convenient for everyday use and easy to carry. ENVIRONMENTALLY FRIENDLY AND GIFT: This BPA-free thermos flask is recyclable and reusable. Use it instead of disposable plastic bottles to help protect the environment. Suitable for home, office, sports, camping, or travel. With a sleek and modern design, it makes a great gift for children, women, and men. Specification: Capacity: 500 ml Material: 304 stainless steel Safe material: High-quality 304 stainless steel, robust, durable, rust-free, and odorless. Ideal for safe drinking, even on the go or outdoors. Keeps heat and cold: Keeps drinks hot or cold for up to 12 hours. Perfect for hot summer or cold winter days. Leak-proof & non-slip: Double lid and silicone rubber prevent leaks. Non-slip base provides a secure hold in your backpack or on the table. Practical 3-lid set: 500 ml thermo mug with versatile lids: cup function and drinking lid. Ideal for the office, travel, or sport. Environmentally friendly & BPA-free: Reusable and BPA-free. Helps reduce plastic waste and protect the environment a thoughtful gift for any occasion.