KOOMADE 33oz Stainless Steel Lunch Box for Keep Food Warm and Food Cold

Price: $38.99
(as of Oct 10, 2026 15:57:42 UTC – Details)

Product description

Pro Tip for Maximum Performance: we recommend preheating or pre-chilling your container before filling. Simply add hot water for 2–3 minutes before packing hot meals, or place it in the freezer before using for cold foods. This simple step helps our patented seal lock in the temperature even longer.

1 KEEP COLD

2 KEEP HOT

1 For 16+ 2 For Work 3 For Picnic 4 For Travel

1 SECURE LEAK-PROOF LATCHES

2 DOUBLE-WALL VACUUM

3 WIDE-MOUTH DESIGN

4 DETACHABLE SILICONE SEAL

5 SILICONE DIVIDER

1 PATENT CERTIFICATION

2 AIR RELEASE VALVE

1 Hand or Dishwasher 2 Large Capacity 3 Silicone Divider

Can it keep food hot and food cold？

Yes, it can! Our lunch box is designed with a dual-function feature that keeps food hot when you need it warm and cold when you want it chilled. Whether you’re packing a hot soup for winter or a fresh cold salad for summer, it handles both perfectly.

how long does it keep food hot or cold?

It keeps food hot for 4+ hours , and it keeps food cold for 8+ hours.

how capacity does it hold？

Our lunch box has a capacity of 33 oz (approximately 975 ml). This size is perfectly designed to hold a full, satisfying lunch for one adult

is the lid completely leak-proof?

Yes, it’s 100% leak-proof, keeping your food fresh and your bag clean.

What are the usage precautions for this product?

It is dishwasher safe and can be stored in the refrigerator. However, it is not recommended for use in the microwave.

[Double-Wall Vacuum]: Our double-wall vacuum insulation keeps food hot or cold for up to 8 hours and locks in freshness. It keeps your hot lunches warm—chili, soup, pasta, stew, meatloaf with mashed potatoes, and roast chicken. And it keeps your cold lunches chilled—sandwiches, wraps, salads, sushi, and cold noodles.
[33oz Spacious Capacity]: This 33oz lunch box holds meals, soups, fruits and snacks. Lightweight and portable, it fits bags and cup holders, great for work,picnics and travel.
[Wide-mouth Design]: Made of premium food-grade 304 stainless steel. Sturdy and rust-resistant for safe daily food storage.The wide opening makes it easy to fill, eat and clean the container. You can use regular spoons, forks and chopsticks to enjoy all kinds of food like soup and salad without restrictions. Every corner is accessible for simple wiping and rinsing, putting an end to the cleaning troubles of narrow-mouth thermoses.
[Leak-Proof Lid]: Four integrated lock catches work with premium detachable silicone seals to form a secure airtight lid. The whole container stays fully spill-proof even when placed in backpacks or lunch bags. The removable seal allows for full deep cleaning and healthier daily use.
[Air Release Valve]: Simply press the valve to quickly release internal steam and air. It optimizes the vacuum seal as the container cools for easy lid opening, while preventing sudden lid pop-ups caused by pressure changes to avoid spills and potential risks.
[Removable Silicone Dividers]: These movable silicone dividers let you freely adjust compartment layouts to suit different meals. They fit tightly inside to separate dry, wet, hot and cold foods, stopping liquid and oil from mixing. Fully removable for easy rinsing and wiping, they leave no food residue.