Why 3.5g mylar bags are the standard 1/8 ounce packaging
The 3.5 gram size — also called an "8th" or 1/8 ounce — is the most widely used packaging unit for portioned dry goods at retail. A 3.5g mylar bag is sized to fit approximately 3.5 grams of dry product, leaving enough headspace for a clean zip-seal close and shelf-ready presentation. Whether you're packaging tea blends, dried herbs, potpourri, or other small dry goods at the standard 1/8 oz portion, an empty 3.5g mylar bag is the format buyers expect.
The 3.5g format also lets you maximize SKU variety on a small footprint. Where larger bags lock you into a single design per shelf-foot, 8th packaging lets you display 4–6 designs side by side, rotate weekly, and test new styles without committing inventory dollars to oversize formats.
What to look for in 8th packaging
A quality 3.5g mylar bag balances four things: barrier strength, closure reliability, print fidelity, and dimensional accuracy. The mylar layer (a polyester film, often laminated with polyethylene and aluminum) is what gives these bags their light, oxygen, and moisture barrier properties. Most 3.5g mylar bags in our catalog use a multi-layer construction with a heat-sealable interior and a printed or laminated exterior.
Closure type matters more than buyers often realize. The standard for 8th packaging is a press-to-close zip top — easy for the end customer to reseal, fast for the packer to fill. Our 3.5g mylar bags are predominantly zip-top, with a small set of heat-seal-only styles for retailers who want a tamper-evident finish.
Print fidelity is where most lower-tier 3.5g mylar bags fall short. Bags should ship with sharp, color-accurate artwork, properly registered die-cuts, and clean lamination edges. Many of our designer 8th packaging styles use holographic foils or matte-soft-touch finishes for shelf differentiation.
How our 3.5g mylar bag designs are organized
We organize 8th packaging by visual identity so buyers can find the look that fits their brand or retail floor. Browse the major families:
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Designer print families — recognizable artwork lineages buyers ask for by name
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Die-cut and cut-out shapes — bags trimmed to silhouettes (snack-pack, juice-box, character cutouts) instead of standard rectangles
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Bag-and-box combos — paired empty mylar bags and matching outer boxes for retailers who want full unboxing presentation
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Holographic and metallic finishes — high-gloss prismatic or foil-stamped exteriors for shelf pop
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Plain and stock styles — undecorated 3.5g mylar bags for buyers who custom-label in-house
For 3.5 mylar bags with boxes specifically, see our dedicated bag-and-box combos collection where every product includes both bag and outer box.
Ordering 8th packaging in volume
Most 3.5g mylar bag SKUs at Black Unicorn Hub are sold in counts that scale from sample packs (10–25 units) up through bulk packs (50–100 units), with 3.5 packaging price-per-unit dropping as you scale. Buyers ordering across multiple designer families can mix counts and styles within a single order.
Shipping speeds vary by inventory and destination — see individual product pages for current lead times. If you're sourcing 3.5g mylar bags for an in-house printing or label-application workflow, our plain and stock styles are the most cost-efficient starting point.
