While comparing ThermoFlask vs Takeya, I couldn’t help but think of another fantastic bottle we’ve used in our home—the Thermos FUNtainer, especially for kids aged 3yr+. Over the years, I’ve purchased at least five of these for my sons, and the only parts I ever had to replace were a couple of straws one of them had chewed.
The brand has proven to be incredibly reliable, and each bottle keeps water cold all day. What really sets it apart is how easy it is to clean and how extremely durable it is in everyday use. Now that my kids are older, I’ve even grabbed the larger size for school days and it works just as well as the smaller one. Among all the brands we’ve tried, FUNtainer remains a favorite for both function and longevity.
Table of Contents
🧊 Why the Thermos FUNtainer Is Still a Parent Favorite in 2025
Let’s dive into this year’s honest, no-fluff Thermos FUNtainer review, based on real-world testing and what parents actually care about. 👇
⭐ FUNtainer 2025 Star Rating Snapshot
| Feature | Rating (Out of 5) | Quick Take |
|---|---|---|
| Insulation Performance | ⭐⭐⭐⭐☆ | Ice lasts up to 12 hours |
| Kid-Friendly Design | ⭐⭐⭐⭐⭐ | Fun prints, perfect grip for small hands |
| Spill Resistance | ⭐⭐⭐⭐☆ | Leakproof when closed properly |
| Ease of Cleaning | ⭐⭐⭐⭐ | Straw pops out, dishwasher safe |
| Value for Money | ⭐⭐⭐⭐⭐ | Affordable and outlasts most kids gear |
🎒 What Makes the FUNtainer a Go-To Bottle?
🧊 Cold All Day
The double-wall vacuum insulation keeps drinks ice-cold for 12 hours, which means that apple juice is still chilled by recess.
🔒 Truly Leakproof (When Closed Right)
No parent wants a sticky juice puddle in their kid’s backpack. The push-button lid locks tight, and the integrated straw won’t spill if snapped shut.
👶 Designed Just for Kids
- Easy to hold
- Push button is manageable even for toddlers
- Straw is gentle on teeth
And let’s be honest—when your child wants to carry their water bottle, you’ve already won.
🧪 Real-World Testing (No Lab Coats Required)
We used the FUNtainer for two weeks across real-life scenarios:
- 8 AM iced water: Still cold by 8 PM (seriously!)
- Milk during school lunch: Fresh, no funky smell
- Dropped from 3 feet (multiple times): Zero dents, just light scuffs
It’s basically kid-proof. And that’s saying a lot.
🎨 Fun, Fresh Designs for 2025
From Marvel heroes to pastel unicorns, Thermos keeps updating the lineup each year. In 2025, they’ve even rolled out eco-friendly designs and anime collabs.
Top picks this year:
- 🕸️ Spider-Man Galaxy Edition
- 🦄 Sparkle Unicorn Dreams
- 🌱 Eco-Forest Animals
- 🎌 Anime Stars (limited release!)
Kids love collecting them. Parents love that their child won’t lose it.
🧼 Easy Cleaning = Less Stress
No one wants to scrub sippy parts at midnight. The FUNtainer has:
- Dishwasher-safe (top rack)
- Straw pops out for deep cleaning
- No odor issues even after chocolate milk
💡 Pro tip: Use a small straw brush weekly for a deeper clean.
🛒 Where to Buy the Thermos FUNtainer
Available at all major retailers:
- Thermos Official Store
- Amazon
- Target, Walmart, and select grocery chains
💰 Typically priced between 16–22, depending on print and availability.
✅ Pros and ❌ Cons
✅ Pros
- Kid-friendly push-button lid
- Super durable stainless steel
- Cold retention up to 12 hours
- Fits in most lunchboxes
- Massive character design library
❌ Cons
- Not made for hot drinks
- Straw needs regular cleaning
- 12 oz might be small for older kids
❓ FUNtainer FAQs – Straight from the Parent Trenches
Is thermos FUNtainer 100% stainless steel?
The thermos FUNtainer is not 100% stainless steel—while its body, including the inner wall and outer wall, is made of 304 stainless steel or 18/8 stainless, the lid and some interior parts are made of BPA-free, non-toxic plastic. It still offers excellent vacuum insulation, is leak-proof, durable, and child-friendly. Designed for school use, it’s a safe, reusable, and eco-friendly option for keeping drinks at the right temperature.
What materials are Thermos Funtainers made of?
Thermos Funtainers are made with 18/8 stainless steel for the inner chamber and outer shell, using a double wall and vacuum insulation to keep hot drinks hot and cold drinks cold. They feature a plastic lid, silicone gasket, and are leak-proof, BPA-free, phthalate-free, and child-safe. The metal body is rust-resistant, dishwasher safe, and built with durable materials that meet strict safety standards. These reusable, eco-friendly, and sweat-proof bottles work great as a thermos bottle, food container, or drink bottle.
What is the best grade of stainless steel for Thermos?
The best grade of stainless steel for Thermos is usually 304 stainless steel or 316 stainless steel, also called 18/8, known for its corrosion resistance, non-reactive nature, and food grade safety. These materials are BPA-free, non-toxic, and perfect for keeping hot or cold liquids at the right temperature with strong thermal retention. A high-quality stainless steel thermos should also be vacuum-sealed, leak-proof, and easy to clean, making it ideal for daily use and outdoor activities.
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📣 Final Verdict: Should You Still Buy the FUNtainer in 2025?
Absolutely. For parents looking for a leak-free, cold-for-hours, kid-approved bottle, the Thermos FUNtainer is still the gold standard.
It’s budget-friendly, lasts for years, and comes in a design your kid will actually want to use. That’s a rare trifecta.
👉 Ready to upgrade your lunch game? Buy the FUNtainer now and give your kid the coolest bottle on the playground.
