Portable Double Layer Insulated Stainless Steel 304 Vacuum Tumbler OEM The Portable Double Layer Insulated Stainless Steel 304 Vacuum Tumbler is a high-quality, durable, and versatile drinkware solution designed for everyday use. Crafted from premium food-grade 304 stainless steel, this tumbler ensures safety, longevity, and resistance to rust and corrosion. Its double-wall vacuum insulation technology effectively maintains beverage temperatures, keeping hot drinks warm for up to 12 hours and cold beverages chilled for up to 24 hours. Key Features: 1. Superior Insulation Performance The advanced vacuum-sealed double-layer construction minimizes heat transfer, providing exceptional thermal retention. Whether it's coffee, tea, or iced drinks, users can enjoy their beverages at the perfect temperature for extended periods. 2. Premium 304 Stainless Steel Made from high-grade 304 stainless steel, the tumbler is non-toxic, odor-free, and resistant to acidic or alkaline liquids. This material ensures durability and prevents flavor retention, making it ideal for repeated daily use. 3. Leak-Proof & Portable Design Featuring a secure screw-on lid with a silicone gasket, the tumbler prevents spills and leaks, making it perfect for on-the-go use. Its lightweight yet sturdy build fits easily in car cup holders, backpacks, or gym bags. 4. Sleek & Ergonomic Aesthetics The sleek, modern design is complemented by a smooth exterior finish, available in various colors and customizable branding options for OEM clients. The tumbler’s ergonomic shape ensures a comfortable grip. 5. Multi-Purpose Use Suitable for a wide range of beverages—hot coffee, iced tea, smoothies, or water—this tumbler is perfect for office, travel, outdoor activities, or fitness routines. 6. Easy Maintenance The wide mouth opening allows for easy filling, drinking, and cleaning. The stainless steel interior is dishwasher-safe (though hand washing is recommended for prolonged insulation efficiency). Applications & Customization: This vacuum tumbler is ideal for OEM/ODM services, allowing businesses to customize logos, colors, and packaging for branding purposes. It caters to cafes, corporate gifts, promotional campaigns, and retail markets. Conclusion: Combining durability, insulation efficiency, and stylish design, this stainless steel vacuum tumbler is a must-have for anyone seeking a reliable and eco-friendly alternative to disposable cups. Its superior performance and customization options make it a top choice for both individual users and businesses. Specifications: - Material: 304 stainless steel (inner/outer) - Capacity: 350ml / 500ml / 750ml (customizable) - Insulation: Double-wall vacuum - Lid Type: Screw-on with silicone seal - Temperature Retention: 12h hot / 24h cold - Finish: Matte/glossy, laser engraving options Perfect for gifting, retail, or promotional use, this tumbler delivers unmatched quality and functionality.