Where to Buy Mylar Bags in the US & Canada (Buyer's Guide)

You can buy Mylar bags almost anywhere now, from big marketplaces to specialty food-storage stores.

The harder question is which ones are worth buying.

A quality Mylar bag protects dry food for decades. A cheap, thin one can fail in months, and you often cannot tell the difference from a product photo.

This guide covers where to buy, what separates a bag built for long-term storage from one that is not, and how to get the right setup the first time.

Where You Can Buy Mylar Bags

There are three main places people shop:

Specialty food-storage stores (online)

They focus on food storage specifically, so they carry the widest range of sizes, offer complete kits with oxygen absorbers included, and can tell you what actually works. The best mix of quality and guidance.

Online marketplaces

Convenient and huge in selection, but quality swings wildly from one listing to the next.

You have to read the specs closely, because "Mylar" gets slapped on everything from heavy food-grade bags to thin balloon-grade film.

Big-box and grocery stores

Easy to grab in person, but the selection is usually limited to small sizes and general-purpose bags that are not built for decades of storage.

The pattern is simple: the more a store specializes in food storage, the more likely you are to get a bag that holds up, and the absorbers to go with it.

How to Choose a Mylar Bag That Actually Lasts

Wherever you buy, judge a bag on these six things. This is what separates real long-term storage from a bag that quietly fails.

• Thickness (measured in mil). Aim for 5 mil at an absolute minimum for reliable long-term storage. Thicker bags, in the 10 to 15 mil range, resist punctures far better and hold a seal longer. Very thin metalized films, the kind used for party balloons, have almost no oxygen barrier.
• Opaque, never see-through. A real food-storage bag blocks light completely. If you can see the food through it, it is not a true light barrier.
• Food-grade layers. Quality bags use a triple layer of PET, aluminum foil, and food-safe PE, so contents never touch the metal.
• Resealable and heat-sealable. A built-in zipper handles daily access, while heat-sealing locks food away for years. The best bags do both.
• Oxygen absorbers included and sized right. The bag alone does not preserve food. It needs an absorber matched to its size.
• A size range that fits your storage. One size rarely covers everything from bulk grain to spices.

Don't Forget the Oxygen Absorbers

This is where a lot of first-time buyers slip up. A Mylar bag seals out new air, but it does not remove the oxygen already trapped inside with your food. That job belongs to an oxygen absorber, and it has to be sized to the bag:

• A 1-gallon bag typically needs a 300 to 500cc absorber
• A 5-gallon bag usually needs 2000 to 2500cc total

Loosely packed foods like pasta hold more air and need more absorbing power than dense foods like rice.

Buying bags and absorbers as a matched kit takes the math out of it, which is why most people are better off with a complete set than sourcing each part separately.

Match the Size to What You're Storing

The right size keeps food fresh and your pantry organized. A quick guide, with kits that already include the matched absorbers:

• Bulk staples you buy in volume (rice, beans, wheat) → a 5-gallon bag kit lines a bucket and holds the most per seal.
• Mid-size batches and single staples → 1-gallon bags for rice, flour, sugar, and oats.
• Everyday portions → quart and 2-quart bags for coffee, snacks, and smaller ingredients.
• A bit of everything → a multi-size kit covers spices to staples in one box, ideal if you are just starting out.

Should You Buy a Kit or Bags on Their Own?

For most buyers, a kit is the smarter buy.

You get bags, matched oxygen absorbers, labels, and clips together in one purchase, with nothing left to figure out.

It is the fastest way to go from "I want to store food" to sealed and shelved.

Buying bags on their own makes sense only when you have a very specific need, like topping up a single size for a bulk grain run.

If you are new to food storage or building a supply from scratch, start with a complete kit and you will have everything you need on day one.

Red Flags to Avoid When Buying

Steer clear of a listing if you see any of these:

• See-through or clear bags. Not a real light barrier.
• Thickness under 5 mil, or no thickness listed at all. A sign of balloon-grade film, or a seller hiding the spec.
• No oxygen absorbers included, with no mention of what size you need. You will end up guessing.
• Vague product details. No dimensions, no mil, no layer description. Quality sellers publish this.

Why Buy From a Dedicated Food-Storage Store

Marketplaces will always be convenient, but a store built around food storage gives you three things a general seller usually cannot: bags made to a genuine food-grade standard, oxygen absorbers already matched to each size, and the guidance to use them right.

That is the difference between a bag that protects a year of food and one that lets it spoil.

At Roylo Globe, every kit ships with the bags, matched absorbers, writable labels, and clips together, in sizes from quart pouches to 5-gallon bags, so you are not piecing a system together from three different listings.

You can browse the full range here.

Frequently Asked Questions

Where is the cheapest place to buy Mylar bags?

Marketplaces often have the lowest sticker price, but cheapest rarely means best value. A thin bag with no absorbers can cost more in spoiled food than a quality kit costs up front. Look at price per complete, ready-to-seal bag, not just the bag alone.

Are Mylar bags from online marketplaces any good?

Some are excellent, some are balloon-grade film. The listing tells you which. Check for stated mil thickness (5 mil or more), an opaque bag, food-grade layers, and included absorbers before you buy.

Is it cheaper to buy Mylar bags in a kit?

Usually, yes. Kits bring down the per-bag cost and include the absorbers, labels, and clips you would otherwise buy separately, so you save money and skip the guesswork.

What thickness of Mylar bag should I buy?

5 mil is the practical minimum for long-term storage. Thicker bags in the 10 to 15 mil range are more durable and puncture-resistant, which matters for heavy staples and bags stored in buckets.

The Bottom Line

Where you buy matters less than what you buy.

Look for opaque, food-grade bags of at least 5 mil, with oxygen absorbers matched to the size, from a seller that specializes in food storage.

Get those right and your food keeps for years.

When you are ready, Roylo Globe carries Mylar bags and oxygen absorber kits in every size, with the absorbers, labels, and clips already included, so you can seal your first batch this week.