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Food-Grade Isothermal Flask

Keeping your food and beverages at the perfect temperature for hours is no longer a challenge. Our premium Isothermal Flask is engineered for superior thermal retention, making it an indispensable companion for daily commutes, long-haul travel, and outdoor adventures. Whether you need a compact 650ml Isothermal Flask for your personal hydration or a generous 1.3L Isothermal Flask for family outings, we have a solution tailored for you. Our versatile Picnic Isothermal Flask is specifically designed to keep your entire meal fresh and delicious from home to your favorite scenic spot. Constructed with high-quality, food-grade materials, these flasks ensure your consumables remain safe and pure, free from any unwanted odors or chemical leaching.


The Food-Grade Isothermal Flask is meticulously designed with a focus on durability, functionality, and user safety. Its core is a high-performance vacuum insulation layer that effectively minimizes heat transfer, keeping hot contents hot and cold contents cold for extended periods. The interior is lined with a premium, food-certified 304 stainless steel that is resistant to corrosion and easy to clean. The exterior is crafted from robust, BPA-free plastic or stainless steel, providing a secure grip and impact resistance. The wide mouth opening allows for easy filling and cleaning, while the leak-proof lid with a silicone gasket ensures a perfect seal, preventing any spills during transport. An ergonomic carry handle or a convenient shoulder strap is integrated for effortless portability, making the Food-Grade Isothermal Flask a reliable choice for any situation.

Key Specifications of Our Food-Grade Isothermal Flask

  • Material: Inner Wall - 304 Food-Grade Stainless Steel; Outer Wall - BPA-Free Plastic / 18/8 Stainless Steel
  • Insulation Technology: Double-Wall Vacuum Insulation
  • Lid Type: Leak-Proof Screw Lid with Silicone Seal
  • Temperature Retention: Keeps hot for 12 hours and cold for 24 hours*
  • Capacity Options: Available in multiple sizes including 500ml, 650ml, 1L, and 1.3L
  • Portability: Integrated Carry Handle or Detachable Strap
  • Dishwasher Safe: Lid components are top-rack dishwasher safe
Model / Capacity Hot Retention (Hours) Cold Retention (Hours) Weight (Approx.) Dimensions (Height x Diameter)
650ml Isothermal Flask 12 24 450g 23cm x 8cm
1.3L Isothermal Flask 10 22 780g 28cm x 12cm
Picnic Isothermal Flask (1L) 11 24 600g 25cm x 10cm

*Temperature retention times are approximate and can vary based on ambient conditions and initial content temperature.

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