ThermoFlask Insulated Food Jar — 12 oz Garden Party Stainless Steel, Leakproof & Temp-Lock Insulation

The ThermoFlask 12 oz Insulated Food Jar is a compact, double-wall stainless steel container that keeps meals hot for hours or cold all day while preventing leaks.

Whether you’re packing soup for a chilly commute, chilled fruit for a hike, or leftovers for lunch at the office, this ThermoFlask food jar combines vacuum insulation and a secure screw-top lid to maintain temperature and protect your bag from spills. Its 12-ounce capacity, built-in handle, and dishwasher-safe construction make it a practical, reusable alternative to disposables for everyday meals and snacks.

How long will food stay hot or cold in this jar?

The jar uses Temp-Lock vacuum insulation to reduce heat transfer, so hot foods remain warm for several hours and cold foods stay chilled much longer than single-wall containers. Exact duration depends on starting temperature and content, but typical performance supports sustained warmth or coolness through a workday or outdoor activity.

• Hot items: maintains warmth for multiple hours in normal use.
• Cold items: keeps chilled meals and snacks cool for extended periods.
• Temperature retention varies with fill level and ambient conditions.
• Double-wall stainless steel prevents flavor transfer between uses.

Is the lid really leakproof for soups and sauces?

The jar features a screw-on lid with a secure gasket designed to form a tight seal and minimize leaks during transport. For best results, ensure the threads are clean and the lid is fully tightened before placing the jar in a bag or backpack.

• Screw-top closure with a molded seal reduces spills.
• Suitable for liquids like soup, stews, and yogurt when closed correctly.
• Inspect and clean the seal periodically to maintain leak resistance.
• Compact shape helps prevent tipping in bags or lunchboxes.

How do I clean and care for the ThermoFlask food jar?

The jar and its lid are dishwasher-safe, so routine cleanup is simple and quick. The wide mouth makes hand washing and reaching into the base easy when you need to scrub corners, and stainless steel resists odors and staining.

• Top-rack dishwasher safe for both jar and lid.
• Wide opening allows easy hand washing with a sponge or brush.
• 18/8 food-grade stainless steel resists flavor retention and stains.
• Periodic gasket cleaning preserves the seal and hygiene.

What size and features make this jar travel-friendly?

At 12 ounces, this food jar balances capacity with portability, fitting into many lunch bags and backpacks without excess bulk. A built-in handle provides a secure grip for carrying on commutes or outdoor trips, while the durable stainless-steel build handles daily wear.

• 12 oz capacity ideal for single-portion meals and snacks.
• Compact form fits most lunch bags and pack pockets.
• Integrated handle for comfortable transport on the go.
• Sturdy construction designed for repeated everyday use.

Who is this for: The ThermoFlask 12 oz Insulated Food Jar is made for students, commuters, outdoor enthusiasts, and anyone who prefers home-packed meals over disposables. It’s a good fit if you want a durable, easy-to-clean container that conserves temperature, prevents leaks, and supports a reusable lifestyle—especially useful for soups, stews, salads, yogurt, and portion-controlled meals.