Yumbox Cubi Thermal Jars

Color: Cubi Surf Blue

$24.00

Keep kids’ meals warm or cool with the Yumbox Cubi Thermal Jar. Designed to be easy to use for little kids with rounded square shape for grip and easy‑open ergonomic carry lid. Stainless Steel, BPA-free, food safe materials.

Why You'll Love It!

Triple‑insulated to keep food hot or cold for 4–6 hours

Easy‑open and carry ergonomic handle for little hands

10 oz volume for just right portions

Durable 18/8 stainless steel

Removable gasket for easy cleaning

Yumbox Cubi Stainless Steel Thermal Food Jar for Kids

Designed with young eaters in mind, the Yumbox Cubi makes packing hot or cold meals simple, fun, and reliable. Its ergonomic handle and rounded-square shape are easy for kids to grip and open independently, while the wide mouth makes filling and cleaning effortless.

The best thermal jar for little kids

  • Triple‑insulated to keep food hot or cold for 4–6 hours

  • Kid‑friendly ergonomic handle for easy opening and carrying

  • Wide, rounded-square shape that’s easy for small hands to hold

  • Durable 18/8 stainless steel interior and lid surface

  • No‑slide bottom & no‑slip lid for secure, spill‑free use

  • Perfect 10 oz capacity for soups, pasta, stews, yogurt, fruit, and more

  • Removable silicone gasket for quick, thorough cleaning

  • BPA‑free and food‑safe material

Dimensions: 4.25 in (H) x 4.5 in (D) / 11 cm (H) x 11 cm (W)
Weight: 0.9 lb / 414 g
Capacity: 10 oz / 1.25 cups
Care Instructions: Hand wash only. Do not microwave

In stock - Ready to be shipped

Yumbox Cubi Thermal Jars

$24.00

$24.00

The Insulated Jar Kids Can Actually Open

Ergonomic, insulated, and kid‑friendly

Yumbox Cubi keeps mini ravioli, rice, pasta, and meatballs warm until lunchtime. The ergonomic lid and easy‑grip shape make it simple for little kids to open and carry, while the wide opening ensures effortless filling and cleaning. Perfect for warm, comforting meals on the go.

FAQs

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Cubi’s triple‑insulated stainless steel design keeps food warm or chilled for 4–6 hours, depending on starting temperature and environment.

Yes. Yumbox Cubi is designed specifically for little hands with an ergonomic, easy‑grip shape and a kid‑friendly lid that twists open smoothly.

It’s perfect for soups, pasta, rice dishes, oatmeal, yogurt, fruit, snacks, and more. The wide opening makes filling and eating simple.

Cubi features a secure, no‑spill lid and a removable silicone gasket that helps prevent leaks when properly sealed.

Hand wash only. The wide mouth and removable gasket make it easy to clean thoroughly. The jar is not microwave‑safe.