About this item 50 YEARS OF INDIAN INNOVATION: Milton water bottles, India’s #1 brand, trusted by millions for quality, durability, and everyday reliability. ISI Certified & 1-Year Warranty: Assured quality and safety with the trusted ISI mark. Durable and reliable bottles backed by a 1-year warranty. Premium Stainless Steel: Made with high-quality SS304 stainless steel for rust resistance, durability, and a safe water bottle for school kids. Advanced Insulation: This thermos water bottle with double-wall vacuum insulation and copper coating keeps drinks hot or cold for up to 24 hours. LEAK-PROOF DESIGN: 100% leak-proof lid prevents spills, making it convenient to carry in bags for office, school, gym, or outdoor activities.