【Outstanding Insulation Performance】 This water bottle excels in thermal retention for both hot and cold beverages, thanks to its double-layer vacuum insulation and interior coatings, providing up to 6 hours of temperature preservation. 【Reliable Material】 Crafted from professional-grade 18/8 stainless steel, our bottle is BPA-free, devoid of chemical toxins, and eliminates metallic taste transfer. This food-grade material resists acid, alkali, and corrosion, ensuring a safe and wholesome drinking experience. 【Lightweight and Durable】 Engineered with a leak-proof lock, the lid securely fastens to prevent spills. The elegantly curved cup design offers ergonomic handling. Additionally, the bottle is easily disassembled and cleaned for convenient daily use. 【Thoughtful Design】 With three drinking options - direct sipping, straw access, and wide-mouth drinking - our bottle showcases meticulous design. The 4-layer leak-proof lock ensures a secure seal, and the built-in pressure relief valve prevents accidental spills, providing a worry-free drinking experience. 【Wide Application】 Whether you're at the office, outdoors, in school, or traveling, our 304 stainless steel water bottle is your versatile companion. Suitable for all occasions, it keeps you hydrated wherever life takes you.