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64oz Outdoor Insulated Vacuum Flask - Durable Sports Bottle from China Suppliers & Factory for Optimal Temperature Retention
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Frequently Asked Questions
How long can the 64oz outdoor vacuum flask keep drinks cold or hot?
The double-wall vacuum insulation technology keeps beverages ice-cold for up to 24 hours and piping hot for up to 12 hours, making it perfect for all-day outdoor sports and adventures.
Is the sports vacuum flask leak-proof?
Yes, the flask is equipped with a 100% leak-proof lid designed to prevent spills and leaks, allowing you to carry it securely in your backpack or sports gear.
What materials is the outdoor insulated flask made of?
It is constructed from premium food-grade 18/8 (304) stainless steel, which is highly resistant to rust, BPA-free, and does not retain or transfer flavors.
Does the exterior of the flask sweat when filled with cold liquid?
No, the advanced vacuum insulation prevents condensation from forming on the outer wall, ensuring a slip-free grip and keeping your hands and bags completely dry.
How should I clean and maintain the 64oz vacuum flask?
We recommend hand washing with warm soapy water and a bottle brush to protect the exterior finish and ensure the longevity of the vacuum seal. Avoid using abrasive cleaners.








