Premium 1000ml Double-Walled Vacuum Insulated Flask with 24-Hour Temperature Retention This high-quality stainless steel flask features advanced double-wall vacuum insulation with inner copper coating, ensuring your beverages maintain their optimal temperature for a full 24 hours〞whether hot or cold. The robust construction provides exceptional insulation while keeping the exterior cool to touch, even with boiling liquids inside. The leak-proof flip lid design allows for one-handed operation, making it perfect for on-the-go use. The lid doubles as a convenient cup, adding versatility to your drinking experience. To achieve maximum temperature retention, precondition the flask with hot or cold water before use and fill to capacity. Always ensure the lid is tightly secured to maintain temperature effectiveness. Ideal for tea brands and distributors, this premium flask offers: - Superior temperature preservation for premium tea products - Elegant, professional appearance suitable for high-end markets - Durable construction designed for commercial use - User-friendly design enhancing customer experience - Versatile applications from home use to commercial settings The protective jacket may vary in color or design but consistently provides high-quality insulation and protection. Despite its substantial exterior size, the interior capacity accurately matches the specified 1000ml volume, with the larger dimensions attributed to the advanced insulation system.zq20260205085355