550ml Sports Portable Double-Wall Vacuum Flask Insulated Stainless Steel Water Bottle

550ml Sports Portable Double-Wall Vacuum Flask Insulated Stainless Steel Water Bottle. Customizable Design: Customized color and logo printing are acceptable for personalization. Long Insulation Performance: Keeps drinks hot for 6 hours and cold for 12 hours effectively. Premium Material Construction: Made with Inner SS304 and Outer SS201 stainless steel for durability. Versatile Usage Scenarios: Suitable for travel, office, home, outdoor activities, and in-car use. Eco-Friendly Product: Designed with eco-friendly features for sustainable daily use. Professional Manufacturer: Over ten years of experience in designing and manufacturing water bottles.