Products Guides CR Guide Labeling Guide Design Guide MOQ Guide Factory vs Broker Case Studies Compliance Canada United States California Colorado Michigan Resources Glossary FAQ Hub About Contact Quote Request info [at] croppak [dot] com
Flagship Product · Factory-Direct

3.5g Mylar Bags (Eighth). The highest-volume retail size.

The eighth is the bestselling cannabis format in North America and our 3.5g mylar bags are built for it. Right size, right price, right shelf presence. If you're not getting your eighth bags right, you're leaving money on the table.

Last updated July 2026

FDA Compliant
Child-Resistant Certified
Food-Grade
Ships to Canada & US
Same-Day Quote
3.5g eighth mylar bags custom-printed with brand artwork, the highest-volume retail cannabis flower size
Product Ref MYLAR-3.5G
30+
Years in Industry
19
Product Lines
100%
Custom Printed
186
Satisfied Customers
Configure Your Bag

Tell us what you need.
We'll find the best all-in price.

Your selection: 3.5g · Child-resistant zip · Matte · CR Certified
The Product

5g Mylar Bags (Eighth) The highest-volume retail size

The eighth is the bestselling cannabis format in North America and our 3.5g mylar bags are built for it. Right size, right price, right shelf presence. If you're not getting your eighth bags right, you're leaving money on the table.

Built for cannabis. Made factory-direct.

Why 3.5 Grams Rules Retail

Walk into any dispensary and count the eighth bags on the shelf. They outnumber every other size by a wide margin. The eighth is the entry point for most consumers. It's enough to last a casual user a week or two. It's not a commitment like a quarter or an ounce. And at the price point, it's an impulse buy for people who came in for something else.

Our 3.5g bags are sized for exactly that amount of flower. Too big and your product looks stingy. Too small and it's packed tight, which customers read as old or compressed. We've tested this. The sweet spot is a bag that holds 3.5 grams with just enough headspace to look full without looking empty.

What Fits and What Works

A 3.5 gram bag fits an eighth of flower, obviously. But it also fits two or three pre-rolls if you're doing multipacks. It fits a half ounce of trim for edibles makers. It fits concentrates if you're doing a solid hash slab. The versatility is why we sell more of this size than anything else.

Thickness matters at this size. We use 4.5 mil minimum for eighth bags. Thinner bags puncture when the flower is dense and packed. Dense eighth bags are the number one failure point for cheap packaging. Go too thin and you're replacing product that leaked out in shipping.

CR options are available and required in most states. We can do a CR zipper or a CR slide lock. Both certified. Both resealable. Your customer buys an eighth, opens it, takes what they need, and seals it back up. That's how retail cannabis works now.

What we make

  • Sized for 3.5g with optimal fill appearance
  • 4.5 mil minimum thickness for dense flower
  • CR zipper and slide lock options
  • Custom dimensions for pre-roll multipacks

One honest, all-in price.

We work directly with a bench of factories - not as a broker. So we match you to the right one and bring back the best all-in price: packaging, printing, shipping, and any duties or tax - in one number with no middleman and no surprises.

Compliance standards we build to

Every product we make meets or exceeds the relevant regulatory standards. We provide the actual test certificates with every order, not just a claim on a website.

Specifications
Capacity
3.5g / one-eighth ounce of flower
Typical size
~3.5 x 4.5 to 4 x 6 in (varies by finish)
Options
Standard or child-resistant; all finishes
Pick your specs above and add to your quote - or browse more and batch them together.
Configure & Add → Browse More Products
Available Finishes

Finish options for 3.5g Mylar Bags (Eighth)

All finishes are available on every product. Pick yours in the configurator above.

Finish swatch for 3.5g eighth mylar bags - cannabis packaging material sample
Product Finish
Matte finish swatch - non-reflective cannabis packaging finish option
Matte
Gloss finish swatch - high-shine reflective cannabis packaging finish option
Gloss
Holographic finish swatch - iridescent rainbow cannabis packaging finish option
Holographic
Kraft finish swatch - natural brown paper cannabis packaging finish option
Kraft
Clear window finish swatch - transparent display panel cannabis packaging option
Clear Window
FDA Compliant
USDA Compliant
Child-Resistant Certified
Food-Grade
How It Works

Four steps. One honest price.

No quote walls, no hidden shipping, no surprise duties. Just the best all-in price - packaging, printing, and shipping - usually same day.

01

Tell Us What You Need

Product, size, quantity. That's it - send it over and we get to work.

02

Get Your Best Price (Usually Same Day)

We take your job to our factory network and bring back the best all-in price - packaging, printing, and shipping in one honest price. No hidden costs, no 'oh, plus shipping.'

03

Your Call

Pick your tradeoff - cheapest or fastest, overseas or North American. Free design help and a digital proof before anything runs.

04

Made & Shipped

Printed direct at the factory and shipped to your door. What we quoted is what you pay.

Product Knowledge

Is This the Right Packaging for Your Product?

The 'eighth' (3.5 grams) is the highest-volume retail SKU in the cannabis flower market. Packaging tailored to this specific volume requires exact dimensional tolerances to avoid excess material waste while maintaining shelf presence. These bags use PET/VMPET/PE for budget options or PET/AL/LLDPE for premium preservation, often finished with matte or soft-touch exterior layers. Because the 3.5g payload places very little physical stress on the bag walls, brands can safely utilize a thinner 3.5 to 4.0 mil structure to cut costs. However, dropping below 3.5 mil is hazardous, as ultra-thin bags lack meaningful barrier properties, allowing UV light, oxygen, and humidity to rapidly degrade THC into CBN and evaporate the terpenes. The 3.5g bag sits at the intersection of extreme cost-sensitivity and aggressive retail marketing. For brands prioritizing freshness, spending fractions of a cent more per unit to upgrade to a 4.5 mil structure with a true aluminum core dramatically extends shelf life. The bag typically measures around 3.5" x 5" to 4" x 6".

Ideal For

  • ✓ 3.5 grams of dried cannabis flower (the highest-volume retail SKU)

Not Ideal For

  • ✕ Bulk volume storage (ounces/pounds)
  • ✕ Heavy edibles requiring rigid protection against crushing

Material Specifications

ConstructionPET/VMPET/PE for budget options; PET/AL/LLDPE for premium preservation; matte or soft-touch exterior finishes
Thickness3.5 to 5.0 mil (3.5 mil is structurally sufficient for 3.5g payload; 4.5 mil feels more premium)
Oxygen Barrier (OTR)OTR 0.5 to 1600+ cc/m2/day depending on foil vs VMPET construction (premium AL foil achieves lower end)
Moisture Barrier (MVTR)MVTR 1.0 to 6.0 g/m2/day (MVTR critical to prevent flower drying and terpene loss)
Light Protection100% opaque with aluminum foil; partial with VMPET only
Odor BarrierComplete with AL foil construction; reduced with VMPET-only budget options

MVTR is critical for 3.5g bags to prevent flower from drying out and losing terpene content. Without proper barrier, THC degrades to CBN and terpenes evaporate. Below 3.5 mil, bags lack meaningful barrier properties. Premium 4.5 mil with true aluminum core extends shelf life from weeks to 12-18 months.

Compliance

Can utilize CR zippers (ASTM Type XI flexible reclosable) or be heat-sealed with tear notch as single-use CR packagingCompliant with plain packaging requirements when manufactured to specMeets CR requirements in CA, CO, MI, NY, OR, WA, IL with certified CR zipperFood-grade materials (FDA 21 CFR 177.1520 compliant)

Minimum Order & Timeline

MOQ: 1,000 units for standard digital prints; 10,000 for gravure/flexo bulk runs

Timeline: 10 to 15 business days

Price Factors

  • Small dimensional size keeps raw material costs low
  • Finish effects (foil stamping, spot UV)
  • CR compliance
  • Quantity tiers

Why Factory Direct?

Because dimensional size is small, raw material costs are low. Factory-direct pricing at $0.08-$0.25 per unit eliminates 30-50% broker markup, making this highly cost-sensitive SKU even more competitive.

Questions

Everything you need to know.

What are the exact dimensions of your standard 3.5g bag?
Our standard eighth bag is 3 inches wide by 5 inches tall with a bottom gusset. That holds 3.5 grams of dense flower comfortably. We can adjust dimensions if your flower is fluffy or you're packing pre-rolls instead.
Can I use the eighth bag for pre-roll multipacks?
Absolutely. Two or three standard pre-rolls fit cleanly. If you're doing five-packs, we'd recommend a slightly wider bag. Tell us what you're packing and we'll spec it.
Why do some eighth bags look half empty on the shelf?
That's a sizing problem. The bag is too big for the product. When a customer sees a half-empty bag, they think you're cheap or your product dried out. We size our eighth bags to look full at 3.5 grams.
What's the minimum thickness for eighth bags?
We won't go below 4.5 mil. Dense flower will puncture thinner bags. Some suppliers sell 3 mil bags for eighths and those fail in shipping. You lose product and you lose customers.
What materials are 3 5g eighth mylar bags made from?
PET/VMPET/PE for budget options; PET/AL/LLDPE for premium preservation; matte or soft-touch exterior finishes. MVTR is critical for 3.5g bags to prevent flower from drying out and losing terpene content. Without proper barrier, THC degrades to CBN and terpenes evaporate. Below 3.5 mil, bags lack meaningful barrier properties. Premium 4.5 mil with true aluminum core extends shelf life from weeks to 12-18 months.
What products are 3 5g eighth mylar bags best for?
3.5 grams of dried cannabis flower (the highest-volume retail SKU).
What is the minimum order for 3 5g eighth mylar bags?
MOQ: 1,000 units for standard digital prints; 10,000 for gravure/flexo bulk runs. Production takes 10 to 15 business days.
Is 3 5g eighth mylar bags child-resistant certified?
Can utilize CR zippers (ASTM Type XI flexible reclosable) or be heat-sealed with tear notch as single-use CR packaging
Are 3 5g eighth mylar bags FDA compliant?
Food-grade materials (FDA 21 CFR 177.1520 compliant)
Do 3 5g eighth mylar bags meet Health Canada requirements?
Compliant with plain packaging requirements when manufactured to spec

Get My Best Price.

One request, direct from the factory, your best price. Send us what you need and we'll come back - usually same day - with one honest, all-in quote. Free, no obligation.