High-barrier matte black Mylar bags for packaging product that needs to stay fresh. The foil layer blocks moisture, oxygen, and UV light — the three things that degrade aroma, flavor, and potency — while the opaque matte finish keeps contents completely private.

Sizes & quantities

Bag size	Available in packs of
1/2 oz (14g) — 5" x 8"	100 · 500 · 1,000 · 5,000 · 10,000
1 oz (28g)	100 · 250 · 500
1 lb	10 · 50 · 100

Larger pack sizes carry a substantially lower cost per bag — worth comparing if you're buying regularly.

Key features

High-barrier construction — blocks moisture, oxygen, and UV light
Matte black, fully opaque — discreet, and gives a clean surface for labels
Puncture-resistant — won't tear or leak in transit
Heat-sealable — seal with any impulse sealer for a genuinely airtight closure

What people package in these

Herbs and spices — holds aroma and flavor
Coffee and dried goods
Edibles and consumables
Retail products needing custom branding — the matte surface takes labels well
Small collectibles and parts needing protection from air and light

Sealing

These need heat sealing to actually perform. Folding or taping the top leaves the barrier open and you lose the protection you paid for. An inexpensive impulse sealer handles all sizes.

Mylar Bags

Mylar Bags