Serving customers in the United States
Poly Mailers for Colorado Businesses
Colorado’s outdoor sector ships a category of product that most packaging advice ignores: things that are light, expensive and stubbornly three-dimensional. An insulated jacket, a sleeping bag, a fleece — none of them folds flat, all of them spring back, and all of them will deform a rectangular bag into a barrel.
The problem is loft rather than weight, and the answers are different from the ones you would reach for with something heavy.
Quote an order for Colorado
Tell us what you ship and where it goes. We confirm the specification, the schedule and the price in writing.
Who buys mailers here
Sectors where poly mailers are genuinely the right packaging, with the reason each one appears rather than a generic list.
Outdoor and technical apparel
A dense cluster of brands shipping insulated and lofted products directly.
Camping and recreation equipment
Soft goods that compress but recover, which is exactly the difficult case.
Cycling and endurance sports
Technical apparel and accessories, often shipped as mixed multi-item orders.
Craft food and beverage
A strong direct-selling base, with heavier and more fragile contents.
What we would suggest
14.5x19 Poly Mailers
The size where a single lofted garment sits flat rather than compressed.
Read the detail24x24 Poly Mailers
Square format for products that will not fold into a rectangle.
Read the detail
19x24 Poly Mailers
Multi-item outdoor orders consolidated into one parcel.
Read the detailLarge Poly Mailers
Choosing between the large formats when loft rather than weight is driving the decision.
Read the detailLoft behaves differently from weight
A heavy item strains a mailer at the seal and the corners because of the force it applies when the parcel moves. A lofted item strains it constantly, in every direction, because it is trying to expand.
The visible result is a parcel that arrives taut, shiny and slightly deformed, with the seal under tension the whole way. It stacks badly, it rolls in a cage, and a proportion of them arrive open — not because the film failed but because the closure was under continuous load rather than occasional load.
Sizing up solves it, and so does a gusset, and the two are not the same answer. A gusset gives the loft somewhere to go without adding footprint, which keeps the parcel square rather than making it bigger. For genuinely lofted products it is usually the better of the two.
Gusset or a bigger bag
Both give lofted contents room. They produce different parcels.
| Row label | Gusseted | Larger flat bag |
|---|---|---|
| Parcel shape when packed | Square and stackable | Rounded, rolls in a cage |
| Footprint | Unchanged | Larger |
| Slack air | Minimal | Substantial |
| Label surface | Flat and taut | Curved, labels lift |
| Cost per unit | Small premium | Higher, being a bigger bag |
For lofted soft goods the gusset usually wins on every measure except the quotation, and it wins on that too once you account for the parcels that would otherwise arrive damaged.
Packing lofted goods properly
Compress evenly, not centrally
Press across the whole face while sealing. Compressing the middle pushes loft into the corners and the seal.
Hold the load down while sealing
Lofted contents rise as the flap folds. If they reach the strip, that section of the seal never bonds.
Do not size up as insurance
Slack air makes a parcel less stable. A gusset gives room without giving space to move in.
Choose the flatter face for the label
A lofted parcel has one face flatter than the other. Labels lift on the curved one.
Multi-item outdoor orders
Outdoor customers often buy several items at once, and a jacket plus a base layer plus accessories is a genuinely awkward parcel — mixed rigidity, mixed loft and no natural pack shape. Consolidating into one large format is usually cheaper than shipping separately, though it is worth weighing a packed sample against your rate card because a consolidated parcel can cross a threshold two smaller ones stayed below. The large formats and how they differ are compared on the large format comparison.
Questions from Colorado buyers
What size mailer suits an insulated jacket?
Start at 14.5x19 for a single jacket folded properly, and consider a gusset rather than sizing up further. Loft is the constraint, not weight, and a gusset gives it room without adding slack air.
Is a gusseted mailer worth the extra cost?
For genuinely lofted products, usually yes. It produces a square parcel that stacks and labels cleanly instead of a rounded one that rolls, and it does that without the slack air a larger flat bag introduces.
Why do parcels with bulky contents arrive open?
Because loft keeps the closure under continuous tension rather than occasional load, and because lofted contents rise into the adhesive strip as the flap is folded. Holding the load down while sealing fixes most of it.
Package bulky goods properly
Send the packed dimensions of your loftiest product and we will tell you whether a gusset or a larger format is the right answer, then quote it.