wiwens Kids Bento Lunch Box Set with 12 oz Insulated Food Jar

Product Overview

The wiwens Kids Bento Lunch Box Set is a multi-piece meal-storage system intended primarily for school-age children. The set combines a 35-ounce plastic bento container with a separate 12-ounce insulated stainless-steel food jar, an insulated carrying bag, utensils, a sauce container, and decorative lunch cards. The main bento container can be arranged with three to five food sections using two removable dividers.

The bento tray uses separate food areas and silicone sealing surfaces to reduce movement between compartments during transport. The removable tray is designed for reheating in a microwave and can be cleaned in a dishwasher. The insulated food jar uses double-wall vacuum construction and 18/8 stainless steel for foods that need to remain warmer than items stored in the main bento tray.

The White-Rainbow configuration uses a cartoon-style exterior intended for children age three and older. The insulated carrying bag holds the meal components together during transport. Because the bento container, insulated jar, and carrying bag perform different functions, cleaning and heating instructions vary by component. The set is intended for reusable food storage and transportation rather than cooking food inside the containers.

Product Information

Product Identifier Summary

ASIN

An ASIN is a catalog identifier assigned within a major online product database. It distinguishes this particular White-Rainbow wiwens lunch-box configuration from other colors, sizes, and lunch sets.

Common Uses

The set is designed for carrying multiple food types in a reusable lunch system. Its separate bento tray and insulated jar allow foods with different storage needs to be packed within the same lunch bag.

• Packing school lunches for children
• Separating sandwiches, fruit, vegetables, snacks, and other foods
• Transporting soup, pasta, and similar foods in the insulated jar
• Keeping sauces or condiments separate from larger food portions
• Carrying lunch utensils with the meal
• Preparing portioned meals for school, day trips, and similar outings

Maintenance and Care

The removable bento compartment tray can be cleaned in a dishwasher. Food residue should be removed promptly, particularly around seals and compartment edges where sauces, crumbs, and oils can collect.

The detachable tray is documented as microwave safe. Components should be separated according to their individual heating instructions before reheating food, because insulated bags and vacuum-insulated stainless-steel containers are not microwave components.

The stainless-steel food jar has a wide opening that provides access to its interior for cleaning. The lid, gasket, threads, and sealing surfaces should be cleaned carefully because trapped food residue can interfere with closure and develop odors.

The insulated lunch bag should be emptied after use and allowed to dry if moisture or condensation develops inside. Food spills should be cleaned promptly to reduce staining and odors.

Silicone seals and removable dividers should be inspected periodically. Warped, damaged, or incorrectly seated seals can reduce the container’s ability to resist leakage.

Safety Information

• The set is identified for children age three and older.
• Adult supervision is appropriate when hot food is placed in the insulated jar for younger children.
• Do not place the stainless-steel insulated food jar in a microwave.
• Use only components specifically identified as microwave safe when reheating food.
• Check food temperature before giving heated food to a child.
• Ensure lids and seals are correctly positioned before transporting liquid or moist foods.
• Inspect the container, utensils, seals, and insulated jar for damage before continued use.
• Do not use cracked plastic food-contact components.
• Clean food-contact surfaces before first use and after each meal.

Technical Specifications

Product History

This configuration is part of the wiwens range of reusable children’s lunch systems combining compartmented bento boxes with insulated food containers and carrying bags. The brand also offers related sets with different food-jar capacities, compartment arrangements, patterns, and included accessories.

No formally documented predecessor, successor, or major hardware revision for this specific configuration has been established in available public product information.

Key Features

• 35-ounce removable bento tray
• Adjustable three-to-five-compartment layout
• Two removable food dividers
• Separate silicone sealing areas
• 12-ounce insulated food jar
• 18/8 stainless-steel food-jar construction
• Double-wall vacuum insulation
• Threaded food-jar lid with silicone seal
• Microwave-safe removable bento tray
• Dishwasher-safe removable tray
• Insulated carrying bag
• Stainless-steel sauce container
• Reusable eating utensils
• BPA-free food-contact materials
• White-Rainbow cartoon design

Package Contents

• 35-ounce compartmented bento lunch box
• 12-ounce insulated stainless-steel food jar
• Insulated lunch bag
• Eating utensils
• Stainless-steel sauce container
• 10 illustrated lunch cards

Compatibility

The removable bento tray is intended to fit its corresponding outer container and sealing lid. Dividers and seals from unrelated lunch boxes should not be assumed to fit because small dimensional differences can affect compartment separation and closure.

The insulated food jar functions as a separate container rather than as a compartment inside the plastic bento tray. It can be carried alongside the bento box within the supplied insulated bag when sufficient space remains.

The removable plastic tray is suitable for documented microwave reheating, while the stainless-steel food jar is not microwave compatible. The two containers should therefore be treated separately when food requires reheating.

Frequently Asked Questions

How can I identify this wiwens lunch-box set?

This configuration uses the White-Rainbow cartoon design and combines a compartmented bento box with a separate insulated food jar and carrying bag. Checking the complete product identifier is useful because wiwens offers several similar lunch sets.

Is the main bento box divided permanently into five sections?

No. Two removable dividers allow the internal layout to be changed, providing between three and five food areas depending on how the tray is configured.

Can different foods be kept separate?

The lid uses sealing surfaces around the compartment areas to limit movement between sections. Correct closure and proper placement of the dividers and seals are important when moist foods are packed.

Can soup be placed directly in the plastic bento compartments?

The separate insulated jar is the component intended for soup and similar foods requiring a more secure container. Highly fluid foods present greater leakage challenges than solid or semi-solid foods in compartmented lunch trays.

Can the plastic bento tray go in a microwave?

The removable food tray is documented for microwave reheating. Other components should be removed unless they are specifically identified as microwave safe.

Can the stainless-steel food jar go in a microwave?

No. Metal vacuum-insulated food containers should not be placed in a microwave. Food should be heated separately before it is transferred into the jar.

How can the insulated jar be prepared for hot food?

Hot food should be placed into a clean container and the lid should be secured correctly. Preheating practices, if used, should follow the instructions supplied with the food jar.

Does the food jar actively heat food?

No. It contains no electrical heating element. Its double-wall vacuum construction is intended to slow temperature change after heated food has been placed inside.

Is the entire lunch set dishwasher safe?

Care instructions vary among components. The removable bento tray is documented as dishwasher safe, while insulated and fabric components should be cleaned according to their specific care requirements.

Can the lunch bag go in the microwave?

No. The insulated carrying bag is intended for transportation and temperature management, not microwave heating.

Can the insulated food jar be placed inside the bento box?

The jar is a separate container and is carried with the lunch set rather than installed within one of the bento tray compartments.

What foods can be packed in the insulated jar?

The wide-mouth jar can accommodate foods such as soup, pasta, warm grains, and other appropriately sized meals. Food texture and temperature should remain suitable for the child using the container.

What is the sauce container used for?

The small stainless-steel container provides a separate location for sauces, dips, dressings, or seasonings that do not need to occupy a larger bento compartment.

Is the set intended only for toddlers?

No. It is marketed for children age three and older. Practical suitability depends on meal size and whether the child can comfortably operate the lids and containers.

Can a child open the food jar independently?

The jar uses a threaded lid, so the amount of force required can vary according to how tightly it was closed and changes in internal pressure. Younger children may occasionally require assistance.

Why might a lunch box leak even when it has sealing gaskets?

Leakage can occur if a lid is not completely closed, a seal is displaced, food interferes with the gasket, or highly fluid contents exceed the design of a compartment. Seals should be kept clean and properly seated.

Can ice packs be placed in the insulated bag?

An appropriately sized ice pack can be used when it fits without preventing the bag from closing or placing excessive pressure on the food containers. Available space is reduced when both the bento box and food jar are carried together.

How should silicone seals be cleaned?

Food residue should be removed from the sealing surfaces after use. Seals should be completely dry and correctly positioned before the container is closed for storage.

Can the lunch box store food overnight?

Food-storage safety depends on the type of food and temperature control. Perishable foods should be refrigerated as required rather than left at room temperature inside the lunch bag.

Does insulation make unrefrigerated perishable food safe all day?

No. An insulated bag slows temperature change but does not replace appropriate refrigeration or other food-safety measures. Perishable food should remain within safe temperature ranges.

Does the lunch box require assembly?

No permanent assembly is required. Removable dividers can be positioned inside the tray according to the desired compartment arrangement.

What should be checked if the lid does not close properly?

Check that the tray is positioned correctly, dividers are seated properly, seals are clean, and no food is blocking the closure. Damaged or distorted components can also interfere with sealing.

Buying Considerations

The set combines several containers, so its total carrying volume is larger than a basic single-piece bento box. The insulated food jar occupies additional room inside the lunch bag and can limit space for an ice pack or separate snacks.

The adjustable compartment design provides flexibility for different foods, but very liquid foods are generally better suited to the dedicated food jar or sauce container. Compartmented plastic trays are more commonly used for solid and semi-solid foods.

The food jar and bento tray have different temperature-management functions. The jar uses vacuum insulation for temperature retention, while the plastic tray is designed primarily for separated food storage and microwave reheating.

The full set weighs more than a lightweight lunch bag and single plastic container. The combined weight of the containers, food, drink, and any ice pack should therefore be considered for younger children carrying school bags.

Children also differ in their ability to operate latches, threaded lids, and utensils independently. A child should be familiar with opening and closing each component before taking the set to school.

Customer Feedback Summary

This section provides a generalized summary of recurring themes reported in publicly available customer feedback. These observations describe owner experiences and are not verified product specifications.

Positive feedback commonly focuses on the variety of components included in the set. Parents frequently mention the combination of a compartmented bento box, separate insulated jar, utensils, and carrying bag as useful for packing several types of food in one lunch system.

The adjustable food compartments and overall portioning arrangement are also recurring positive themes. Users often report that the sections provide enough separation for snacks, fruit, main foods, and small side items without requiring several independent plastic containers.

The insulated food jar receives favorable comments from users who pack warm foods for school lunches. Reports generally describe useful temperature retention over the period between morning meal preparation and a typical school lunchtime, although actual temperature retention varies with starting temperature, food type, and environmental conditions.

Reported limitations include available space inside the carrying bag when both the bento box and food jar are packed together. Some users report needing smaller ice packs or finding little remaining space for additional containers.

Leak resistance receives mostly positive but not completely uniform feedback. Some users report successful separation of foods, while isolated reports describe leakage when moist food is packed or the container is not fully secured. Correct lid closure and clean sealing surfaces therefore remain important during everyday use.

Related Products

• wiwens Kids Bento Lunch Box with 9 oz Insulated Food Jar
• wiwens Kids Bento Lunch Box with 17 oz Insulated Food Jar
• wiwens Kids Bento Lunch Box Sets in alternative cartoon patterns
• wiwens Insulated Food Jars
• wiwens Insulated Lunch Bags
• Comparable children’s bento sets with removable dividers and insulated food containers

Last Updated

August 15, 2026