Serving customers in the United States
Poly Mailers for Arizona Businesses
Most heat advice about packaging is about storage. Arizona raises a different question: what happens to what is inside the parcel during a summer delivery, when a van interior and a doorstep both reach temperatures that would not be reached anywhere else we supply.
For soft goods it makes no difference. For anything with a melting point — cosmetics, confectionery, adhesives, some plastics — it changes what packaging can reasonably be asked to do, and it is worth being honest about the limits.
Quote an order for Arizona
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.
Direct-to-consumer brands
A fast-growing base, much of it shipping across the southwest in summer.
Beauty and personal care
The category most affected by heat in transit, because so much of it is formulated to soften.
Outdoor and recreation
Products designed for heat, shipped in it, which is one of the easier combinations.
Fulfilment and distribution
Warehousing positioned to serve the southwest, with the storage discipline that requires.
What we would suggest
White Poly Mailers
A pale film absorbs less radiant heat than a dark one on a doorstep in sun.
Read the detail
Poly Bubble Mailers
The lining provides some insulation as well as impact protection.
Read the detail
Padded Poly Mailers
Where the contents need a buffer between them and an ambient temperature.
Read the detail
Self-Seal Poly Mailers
Heat affects adhesive, so the closure specification deserves attention here.
Read the detailWhat packaging can and cannot do about heat
The honest answer is: less than you would like.
A poly mailer is not an insulated container, and no film weight or lining will make it one. A parcel sitting in a van or on a doorstep in high summer will reach ambient temperature, and the packaging affects how quickly rather than whether.
What packaging can do is marginal but real. A pale film absorbs less radiant heat than a dark one, which matters for a parcel in direct sun. A cushioned lining adds a small buffer, slowing the rate of change. Neither is a solution for genuinely heat-sensitive contents.
If your product cannot tolerate a hot van, the answer is not a different mailer. It is insulated packaging, a different service level, or seasonal restrictions on where you ship — and it is better to conclude that early than to work through three packaging specifications first.
Practical mitigations that do work
Four things that genuinely reduce heat exposure, none of which is a change of mailer.
Ship earlier in the week
A parcel that sits over a weekend in a facility or a vehicle has the longest exposure of any in the network.
Use a pale outer
A white or light film in direct sun absorbs measurably less radiant heat than a black one.
Add a cushioned lining
Not for insulation as such, but it slows the rate at which contents reach ambient.
Set expectations at checkout
For genuinely heat-sensitive products, a seasonal note is more honest than packaging that cannot deliver.
Storage in the same climate
The other half of the heat problem is your own stock. Closure adhesive degrades faster at high temperature, and a pallet held through a desert summer in an uncooled space seals noticeably worse than fresh stock. Order to a rate you will actually use, keep cartons sealed and away from external walls, and test a bag from anything that has been sitting. The material behaviour behind that is set out on the materials page.
Questions from Arizona buyers
Will a poly mailer protect contents from heat?
Only marginally. A mailer is not insulated packaging, and a parcel will reach ambient temperature in a hot vehicle whatever film it is in. A pale outer and a cushioned lining slow the process; they do not prevent it.
What should I do about heat-sensitive products in summer?
Address it outside the packaging: ship earlier in the week so parcels do not sit over a weekend, use insulated packaging where the product genuinely requires it, or set seasonal expectations at checkout. A different mailer will not solve it.
Does heat affect the mailers themselves?
It affects the closure adhesive rather than the film. Stock held through a hot summer in an uncooled space seals less reliably, so store sealed and away from external walls, and test a bag from any carton that has been sitting.
Ship through a desert summer
Tell us what you ship and whether it is heat-sensitive. We will tell you honestly what packaging can help with and what it cannot.