Insulated Cooler Bag S/M/L – Waterproof Thermal Lunch Tote

Keep Food Hot or Cold for Up to 4–6 Hours – Anywhere You Go

Whether you're heading to the office, packing a school lunch, or running food deliveries, this portable insulated cooler bag is the perfect companion. Built with a three-layer thermal construction and a waterproof TPU-lined interior, it keeps your meals fresh, tasty, and at the right temperature for 4–6 hours. Available in three sizes — Small, Medium, and Large — there's a perfect fit for every need.

Made in Mainland China.

Why You'll Love This Thermal Lunch Bag

• Three-Layer Insulation: Outer non-woven fabric shell → thickened cotton middle layer → heat-reflective aluminum foil inner lining. This triple-barrier design creates a powerful thermal seal that locks in temperature effectively.
• 4–6 Hour Temperature Retention: Rigorously tested to maintain both hot and cold temperatures for up to 4 hours (strict) and up to 6 hours for general freshness — ideal for morning congee, milk tea, noodles, salads, or chilled beverages.
• Waterproof & Easy to Clean: The aluminum foil inner lining is moisture-resistant and wipes clean in seconds — no more stains or spills ruining your bag.
• Lightweight & Portable: High-density non-woven fabric keeps the bag lightweight without sacrificing durability. Dual carry handles make it easy to tote anywhere.
• Three Versatile Sizes:
  • S: 21 × 14 × 17 cm (8.27" × 5.52" × 6.7") — perfect for a single meal or snack
  • M: 28 × 14 × 17 cm (11.02" × 5.52" × 6.7") — great for daily office lunches
  • L: 41 × 26 × 33 cm (16.14" × 10.23" × 12.99") — ideal for family picnics or food delivery
• Wide Range of Uses: Perfect for breakfast shops, coffee shops, milk tea stores, fried chicken outlets, dessert parlors, office workers, students, and outdoor adventurers alike.

Product Specifications

What's in the Box?

• 1 × Insulated Cooler Tote Bag (size as selected)

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For more guidance on safe food storage temperatures and preventing foodborne illness, visit the FDA's Safe Food Storage Guide.

Frequently Asked Questions

Q: How long does this insulated cooler bag keep food hot or cold?

A: This insulated lunch bag is tested to maintain strict temperature control for up to 4 hours. For general warmth and freshness, performance extends to the 4–6 hour range, making it perfect for work days, school trips, or outdoor picnics.

Q: What sizes are available for the thermal cooler bag?

A: The bag comes in three sizes — Small (21×14×17 cm), Medium (28×14×17 cm), and Large (41×26×33 cm). The Small is great for a solo snack, the Medium suits everyday office lunches, and the Large is ideal for family outings or food delivery use.

Q: Is the insulated lunch bag waterproof and easy to clean?

A: Yes! The interior is lined with thickened aluminum foil, which is not only heat-reflective but also moisture-resistant and very easy to wipe clean. The outer non-woven fabric shell also provides added durability against daily wear and light moisture.

Q: Can this bag be used for food delivery or commercial food service?

A: Absolutely. This thermal tote bag is widely used in breakfast shops, congee stores, coffee shops, milk tea outlets, fried chicken shops, and dessert parlors to transport takeaway orders while keeping them at the ideal serving temperature.