1000ml Stainless Steel Vacuum Thermos Flask – Leakproof & BPA-Free

Meet your perfect hydration companion — the Trebalena 1000ml Stainless Steel Vacuum Thermos Flask. Whether you're commuting to the office, hiking a trail, or simply enjoying a quiet morning at your desk, this double-wall insulated bottle keeps your hot drinks hot for up to 15 hours and cold drinks cold for up to 20 hours. Made from premium food-grade stainless steel and completely BPA-free, it's built to be as safe as it is durable.

Made in Mainland China.

Why You'll Love It

• Superior Vacuum Insulation: Double-wall construction locks in temperature for 12–24 hours, so your coffee stays piping hot and your iced water stays refreshingly cold.
• 100% Leakproof: The precision vacuum-sealed cap creates an airtight seal — toss it in your bag without a second thought.
• Generous 1000ml Capacity: Holds enough for a full day of sipping — perfect for long commutes, gym sessions, travel, or all-day desk work.
• BPA-Free Stainless Steel: No harmful chemicals, no metallic taste — just clean, great-tasting drinks every time.
• Includes a Built-In Sieve/Strainer: Brew loose-leaf tea or infuse your water with fruit directly in the bottle — no extra equipment needed.
• Sleek Straight-Cup Design: Slim, ergonomic, and fits most standard cup holders and backpack side pockets.
• Easy to Clean: Wide-mouth opening allows for effortless cleaning and filling.

Product Specifications

Perfect For

• ☕ Office use — keep coffee or tea warm through your whole workday
• ✈️ Travel — leakproof and TSA-friendly design
• 🏕️ Outdoor adventures — camping, hiking, cycling, and more
• 🏋️ Gym & fitness — stay hydrated during long workouts
• 🍵 Tea lovers — built-in strainer for loose-leaf brewing on the go

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For more on how to choose the right insulated bottle for your lifestyle, visit the FDA's guidance on BPA-free products.

Learn more: Vacuum flask

Frequently Asked Questions

Q: How long does the 1000ml stainless steel thermos flask keep drinks hot or cold?

A: This vacuum insulated thermos flask keeps beverages hot for up to 15 hours and cold for up to 20 hours, with an overall insulation performance range of 12–24 hours depending on conditions such as ambient temperature and how often the lid is opened.

Q: Is the thermos flask truly leakproof — can I carry it in my bag?

A: Yes! The precision-engineered vacuum-sealed cap creates a completely airtight, leakproof seal. You can safely carry it in a backpack, handbag, or laptop bag without worrying about spills.

Q: What is the thermos made of, and is it safe to use for hot and cold drinks?

A: The flask is constructed from 100% food-grade stainless steel with no BPA or other high-concern chemicals. It is fully safe for both hot beverages like coffee and tea and cold drinks like iced water or smoothies.

Q: Does the 1000ml vacuum flask fit in a standard car cup holder?

A: The straight-cup design is engineered to fit most standard car cup holders and backpack side pockets, making it convenient for commuters and travellers alike.

Q: What does the included sieve/strainer do?

A: The built-in sieve or strainer allows you to brew loose-leaf tea or infuse your water with fruit slices directly inside the bottle — no separate infuser required. Simply add your ingredients, fill with water, and enjoy fresh, flavourful drinks on the go.