Life in the City, Lunch on the Go
As a full-time editor living in a bustling city, my days are packed with subway commutes, endless emails, and back-to-back deadlines. Preparing my own light meals became my way to stay healthy and save time.
The problem? Most lunch boxes were either too heavy, too bulky, or simply not practical for carrying around in my work bag. That changed when I discovered the Durbl Fold-Up Container — a collapsible silicone lunch box designed for urban professionals like me.
My Everyday Lunch Routine
Most days, I pack a light Caesar salad, a sandwich, or a colorful fruit bowl. Durbl’s platinum silicone container keeps everything fresh and sealed — no spills in my laptop bag.
The best part comes after lunch: with a simple press, the container collapses flat, leaving me extra room in my bag. For someone who already carries a laptop, notebooks, and maybe a book or two, that makes a huge difference.
Even my colleagues noticed. “Where did you get that foldable lunch box?” they asked. It quickly became a conversation starter at the office.
Beyond the Office — Evenings & Weekends
Durbl isn’t just for lunch. Some evenings, I take leftovers back home. Since the container is microwave, freezer, and dishwasher safe, I don’t need to transfer food to another dish — less hassle, more convenience.
On weekends, I pack snacks or a full meal for a picnic or a long writing session at a café. The container is light, portable, and eco-friendly — a small but meaningful step toward reducing single-use plastic.
Which Size Fits Your Lifestyle?
Durbl fold-up containers come in four sizes — designed to match different appetites and food types.
Size
Approx. Cups
Best For
Lifestyle Fit
Folded Height
400 ml
~1.7 cups
Fruit, yogurt with granola, snacks
Afternoon bites, kids’ snacks
Ultra-compact
600 ml
~2.5 cups
Caesar salad, half sandwich + fruit
Light office lunch
Slim fit in tote/laptop bag
900 ml
~3.8 cups
Grain bowls, pasta, full salad
Office lunch + energy boost
Compact
1200 ml (Mega)
~5.1 cups
Full poke bowl, large pasta, meal prep
Bigger appetite / all-day meal
Folds down to ~1.4" (3.6 cm)
*Folded height ensures easy storage after meals.
More Uses, Less Waste
Durbl isn’t just a lunch box — it’s a lifestyle choice.
Convenience: Save space after meals.
Health: Encourage homemade, balanced meals.
Sustainability: Durable, reusable, eco-friendly.
For me, it’s a small daily ritual that makes city life a little easier, a little healthier, and a lot more organized.
Ready to find your perfect lunch companion?
Shop Durbl Fold-Up Containers — available in 400ml, 600ml, 900ml, and 1200ml sizes.
Why Test the Capacity?
When shopping for a silicone lunch box or collapsible container, one big question always comes up:“Does the labeled 600ml actually hold 600ml, or will it overflow halfway?”
Too often we’ve seen containers that look good on paper but fail in real life. So, to find out the truth, I decided to run a simple but practical capacity test on the Durbl 600ml silicone lunch box.
The Test: Two Bottles of Coca-Cola
For this experiment, I used something everyone knows: two 300ml bottles of Coca-Cola.
First bottle (300ml): the container filled up to about halfway.
Second bottle (another 300ml): the container reached the top, snug and exact.
Double-checked with a measuring cup: total capacity matched perfectly — no exaggeration, no shortfall.
The result: the Durbl 600ml collapsible container truly equals two bottles of Coke.
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Everyday Use: Perfect for Office Lunch & Small Kitchens
The numbers tell the truth, but real-life use makes it even better:
Foldable food container: Made of flexible silicone, it collapses flat after use, saving space in your bag or kitchen.
Lightweight & durable: Much lighter than glass, yet sturdy enough for daily carry.
Ideal for light meals: The 600ml size is just right for a fresh salad or a hearty sandwich, perfect for office lunches or meal prep.
Why Choose Durbl?
Real capacity → Backed by a hands-on capacity test, 600ml means exactly 600ml.
Eco-friendly & safe → Made from premium platinum-grade silicone, reusable and food-safe.
Space-saving design → Tailor-made for busy professionals and small kitchens.
Versatile → Great for office lunches, gym meals, or storing leftovers at home.
Final Takeaway
This “Coke experiment” proves it once and for all — the Durbl collapsible silicone lunch box delivers exactly the capacity it promises.
If you’ve been searching for a foldable food container that’s lightweight, space-saving, and perfect for salads or sandwiches, Durbl is the trustworthy choice.
Two bottles of Coke = one container. Simple, reliable, and just right for your daily routine.
As more people embrace low-waste living, reusable silicone storage bags have quickly become a kitchen essential. Safe, durable, and endlessly versatile, they’re ideal for everything from packing lunches to freezing soup to sous vide cooking.
With many options on the market, how do you know which silicone bag is right for you?
To help you make the best choice, we’ve compared popular silicone bags — including our own Durbl Half Gallon and Sandwich Bags — across six key dimensions: seal strength, material feel, ease of use, cleaning convenience, value, and temperature performance.
Seal Strength That Actually Holds
Some silicone bags use press-and-pin seals or minimalist one-piece designs. While these may work well for dry snacks or kids’ lunches, they can struggle with leak resistance under pressure or tilt.
Durbl bags feature a wide, double-layer seal with a satisfying “click” when closed — offering exceptional leak protection. Whether you're storing soups, marinated meats, or leftovers for the freezer, you can count on it to stay sealed.
Thickness & Feel: Structured vs. Foldable
Not all silicone feels the same. Some bags are ultra-soft and thin, which makes them easy to fold — but also prone to stretching or even tearing over time. Others are thick and self-standing, but rigid and hard to store.
Durbl strikes a thoughtful balance with medium-thick, platinum-grade silicone: soft and flexible enough to fold, yet sturdy enough to hold shape on your countertop.
Ease of Use: Open, Grab, Go
One frustration with some bags? Trying to hold open a collapsing pouch while your other hand fumbles with food. Some thinner designs require both hands to operate smoothly.
Durbl bags naturally stay open just enough for you to add or remove food easily — even with one hand. That makes them especially handy in busy kitchens or during meal prep.
Cleaning Made Easy
Some silicone bags collapse in the dishwasher or develop cleaning dead zones. Others are hard to flip inside out, making hand-washing a hassle.
Durbl bags are fully invertible, with a smooth interior that rinses clean quickly — and they dry fast, too. Whether you're scrubbing by hand or running the dishwasher, cleanup is always simple.
Everyday Value, Without Compromise
Premium silicone bags can be surprisingly expensive — especially if you want to buy several for your pantry, freezer, and lunch kits. And while some brands focus on color variety or aesthetics, that doesn’t always translate into durability.
Durbl is built for daily, long-term use and priced for practical households. With bundled sets and generous sizing, it’s easy to replace your entire drawer of disposable plastic bags at a reasonable cost.
Ready for Heat, Cold, and Everything in Between
All high-quality silicone bags should work in the freezer, microwave, and dishwasher. But in practice, some go soft and slippery when heated, while others become stiff and hard to grip.
Durbl bags maintain a consistent, comfortable texture across temperature extremes — from frozen to microwaved. No slipping, no sagging, no stiffness.
At a Glance: How Durbl Stands Out
Feature
Durbl Reusable Bags
Leak Resistance
✅ Excellent for liquids and marinated foods
Material Feel
✅ Soft, sturdy, foldable
One-Hand Usability
✅ Easy to open and grab from
Cleaning
✅ Invertible, quick-drying
Value
✅ High performance, family-friendly price
Heat/Freeze Durability
✅ Handles temperature changes with ease
Choose What Works for You
There’s no one-size-fits-all answer when it comes to sustainable living. If you value a leak-proof seal, easy cleaning, and long-term performance at a practical price, Durbl may just be your perfect everyday solution.
Ready to upgrade your storage routine?Explore Durbl Half Gallon and Sandwich Bags → [Shop Now]
I had the kind with a plastic slider on the top - I hated using them & they didn't seal well and things got freezer burn quickly. These seem to seal much better and are much easier to use, and the silicone being really clear so you can see the contents easily is very helpful too. You can fit a lot more in them than you think, I've been using the snack size more than I thought I would. I wish they would offer the quart size individually - I don't understand why you can get every size except that one. Definitely recommend them
These are great, but I wish they would offer more buying options. They only come in a 3-pack and they don't offer just the size you want individually. I am loving using these for work lunches and that they are safe to heat up in the microwave. They seal well and are heavy duty enough to be sturdy, but don't feel heavy to cart around.