Thermos Kids Food Jar Buying Guide: Sizes, Lids and Lunches
By Thermos Brand | Published: 2026-10-15
Category: Buying Guides
Choose the right Thermos kids food jar by capacity, insulation time, and included spoon. Compare 10oz vs 16oz and bundle options for school lunch.
Quick answer
For most school lunches, choose the 10oz size for younger kids (preschool to early elementary) and the 16oz size for older kids or bigger appetites. If you want the longest heat retention, the 16oz Thermos Kids Food Jar keeps food hot up to 7 hours; the 10oz jars keep hot food hot up to 5 hours. All three jars are BPA-free stainless steel, dishwasher safe (top rack), and have a wide mouth that fits a kids' spoon.
Why insulation time matters more than size alone
A food jar's job is to hold temperature from morning prep to lunch. The 16oz Thermos Kids Food Jar keeps hot food hot for up to 7 hours and cold food cold for up to 9 hours. The 10oz jars keep hot food hot for up to 5 hours and cold food cold for up to 7 hours. If your child eats lunch more than five hours after packing, the 16oz jar gives you a wider safety margin for hot foods like soup or pasta. For cold foods like yogurt or fruit, both sizes perform well, but the 16oz holds temperature longer.
Spoon included or not: a small detail that changes daily use
The 16oz Thermos Kids Food Jar and the 10oz FUNtainer Food Jar Paw Patrol both include a spoon. The 10oz Thermos Kids Food Jar does not include a spoon. If you pack lunch in a hurry and don't want to remember a separate utensil, a jar with an included spoon simplifies your routine. If you already have a favorite kids' spoon or your child prefers a specific utensil, the lower-cost 10oz jar without a spoon may be a better fit.
When a bundle makes sense for school lunch
If you're buying a lunch box and a food jar together, the Pokémon Bundle pairs a novelty lunch box, a 12oz FUNtainer water bottle, a 10oz FUNtainer food jar, and a hard ice pack. The lunch box has an insulated interior with premium cell foam, an easy-clean PEVA lining, and a padded carry handle. It's sized to fit Thermos FUNtainer water bottles and food jars alongside lunch items. This bundle works well if you want a coordinated set and your child likes Pokémon. If your child needs a larger food jar for bigger meals, the 16oz jar sold separately may be the better choice.
Decision rules for choosing a Thermos kids food jar
- If your child eats lunch within 5 hours of packing: A 10oz jar is sufficient. Choose the 10oz FUNtainer Food Jar Paw Patrol if you want an included spoon, or the 10oz Thermos Kids Food Jar if you already have a spoon and want to save a little. 10oz is the practical choice for preschool and early elementary.
- If lunch is more than 5 hours after packing or your child has a bigger appetite: Choose the 16oz Thermos Kids Food Jar. It holds hot food hot up to 7 hours and cold food cold up to 9 hours, and the larger capacity fits a full serving of soup, pasta, or leftovers. 16oz is the safer bet for long days or older kids.
- If you want a complete lunch set in one purchase: The Pokémon Bundle includes a lunch box, water bottle, 10oz food jar, and ice pack. It's sized so the FUNtainer bottle and food jar fit inside the lunch box. Note that the food jar in this bundle is 10oz, not 16oz. Choose the bundle for convenience and coordination, not for maximum capacity.
Product facts
- 16oz Thermos® Kids Food Jar: 16oz capacity; keeps hot food hot up to 7 hours and cold food cold up to 9 hours; BPA-free stainless steel; spoon included; dishwasher safe (top rack only). Best for older kids or bigger appetites and for lunches packed more than 5 hours before eating.
- 10oz FUNtainer® Food Jar Paw Patrol: 10oz capacity; keeps hot food hot up to 5 hours and cold food cold up to 7 hours; BPA-free stainless steel; spoon included; dishwasher safe (top rack only). A good fit for younger kids who eat within 5 hours and for parents who want an included spoon.
- 10oz Thermos® Kids Food Jar: 10oz capacity; keeps hot food hot up to 5 hours and cold food cold up to 7 hours; BPA-free stainless steel; spoon not included; dishwasher safe (top rack only). A lower-cost option if you already have a spoon or prefer your own utensil.
- Pokémon Bundle - Novelty Lunch Box, 12oz FUNtainer® Water Bottle, 10oz FUNtainer® Food Jar & Hard Ice: Bundle includes a Pokémon lunch box, 12oz FUNtainer water bottle, 10oz FUNtainer food jar, and hard ice pack. Lunch box has insulated interior with premium cell foam, easy-clean PEVA lining, padded carry handle, and fits Thermos FUNtainer water bottles and food jars. A coordinated set for kids who like Pokémon and need a complete lunch-carrying solution.
Who should buy which
Best for
- Parents of preschoolers or early elementary kids who eat lunch within 5 hours (10oz jars)
- Older kids or big eaters who need hot food to stay hot for up to 7 hours (16oz jar)
- Families who want a coordinated lunch set with a lunch box and water bottle (Pokémon Bundle)
Not for
- Kids who need a larger portion than 10oz but whose parents want a bundle (choose the 16oz jar separately)
- Parents who prefer to pack a separate spoon (the 10oz Thermos Kids Food Jar has no spoon included)
