Postal and parcel pricing is banded. A pack a few millimetres over a threshold costs more on every single order - and almost nobody measures it.
Postal and parcel packaging is packaging specified to the size and weight bands that postal and parcel carriers price on. WSUK supplies postal boxes, book wraps and wrap-around mailers, letterbox-depth formats, padded and paper mailers, polythene mailers and tube and poster packaging, and - more importantly - measures your current packs against the thresholds first. A format a few millimetres over a depth or dimension band costs more on every order it carries, and it is invisible until somebody puts a ruler on it. For the brand and unboxing side see ecommerce packaging; for the despatch operation see parcel services.
Packaging that sits just inside a threshold is the cheapest optimisation available, and the one most businesses have never checked.
Book wraps, wrap-around mailers and shallow postal boxes built to stay under the depth thresholds that decide both the price band and whether a redelivery happens.
Postal boxes, padded and paper mailers and polythene mailers across the dimension ranges that matter, specified to the band rather than to the nearest stock size.
Tube and poster packaging, long and thin formats, and the shapes that attract surcharges if they are not packed to the carrier's limits.
This is the rare packaging change where the saving is arithmetic rather than an estimate.
Measure, map, specify, supply.
Actual dimensions and weights of your current packs, by volume line rather than by assumption.
Where each pack sits relative to your carriers' and the postal service's size, depth and weight thresholds - and how far over the line the near-misses are.
Formats that sit inside the bands while still protecting the product, including letterbox depths where the product allows.
Materials supplied, and the band outcome checked against real despatches rather than assumed.
Supplied from the Midlands Golden Triangle to businesses across the UK, alongside the despatch operation if you want both in one place.
Postal and parcel packaging is packaging specified around the pricing structure of the postal and parcel networks rather than around the product alone. The reason it deserves its own specification is that this pricing is banded, not linear. A parcel does not cost proportionally more as it gets slightly bigger; it costs the same right up to a threshold and then it costs noticeably more. Depth thresholds are the sharpest of these, because a format shallow enough to go through a letterbox avoids both a higher band and the possibility of a failed delivery, and a failed delivery costs a second journey and usually a customer contact as well. The practical consequence is that the most expensive packaging mistake in a small-parcel operation is frequently a box that is a few millimetres too deep - and it is invisible, because nothing goes wrong. Every order simply costs slightly more than it needed to, forever. Checking it requires nothing more sophisticated than measuring the packs you actually send against the thresholds your carriers actually publish, which is where this work starts. From there the specification is a set of formats that sit inside the bands: book wraps and wrap-around mailers for flat goods, which hold the product firmly and stay shallow; shallow postal boxes for anything with a small amount of depth; padded, paper and polythene mailers where a box is unnecessary; and properly specified tube and long formats for the shapes that attract surcharges if they exceed the carrier's limits. The constraint that must not be lost is protection. Going shallower by removing protection is a false economy that produces damage returns, so low-profile formats need restraint designed in - a book wrap that grips the product is doing something a thin box with a gap in it is not. Finally, it is worth measuring the result rather than assuming it, because band outcomes depend on how a carrier measures as well as on the pack. For the brand and customer-experience side of the same pack see ecommerce packaging; for the despatch operation see parcel services, parcel fulfilment and ecommerce parcel delivery.
Specification first, then a quote against it.
Actual dimensions and weights of your current packs, by volume line rather than by assumption.
Where each pack sits relative to your carriers' and the postal service's size, depth and weight thresholds - and how far over the line the near-misses are.
Formats that sit inside the bands while still protecting the product, including letterbox depths where the product allows.
Materials supplied, and the band outcome checked against real despatches rather than assumed.
Everything you need to know about postal & parcel packaging at WSUK, answered plainly.
Parcel pricing is banded rather than linear, so a pack costs the same until it crosses a threshold and then costs noticeably more. A format a few millimetres over a band costs you more on every single order, which is why measuring is worth doing.
A pack shallow enough to be posted through a standard letterbox. For flat and low-profile goods it avoids a higher price band and, just as valuably, avoids a failed delivery when nobody is home.
If it is flat or low-profile, usually yes - and a book wrap grips the product rather than leaving a gap, so protection generally improves rather than suffers. Send us dimensions and we will tell you.
Not if it is specified properly. Going shallower by removing protection causes damage; going shallower by replacing loose protection with restraint usually reduces it. That distinction is the whole specification.
Measure them against the thresholds. It is genuinely that simple and almost nobody does it - send us your pack dimensions and the carriers you use and we will map it.
Yes, and it is worth specifying rather than improvising, because long and thin packs attract surcharges when they exceed a carrier's length limits.
They overlap and they are not the same question. This page is about the carrier bands and the postal network. Ecommerce packaging is about the brand experience, the unboxing and returns. Most online sellers need both answered.
Yes - parcel services, parcel fulfilment and pick and pack cover the operation, so the packaging and the despatch sit with the same provider.
Yes. Postal formats are bulky relative to their value, which makes them a good candidate for packaging stockholding and call-off.
| What you get | WSUK | Typical packaging supplier |
|---|---|---|
| Current packs measured against carrier band thresholds | Yes | Rarely |
| Letterbox depths used wherever the product allows | Yes | Rarely |
| Restraint designed in rather than protection removed | Yes | Rarely |
| Surcharge limits for long and irregular packs considered | Yes | Rarely |
| Band outcome confirmed against real despatches | Yes | Rarely |
| Despatch operation available from the same provider | Yes | Rarely |
Postal & Parcel Packaging is supplied to businesses across the UK from the Midlands Golden Triangle. Pick a location for how supply works locally, or see the full list on the packaging services hub.
Send us your current pack dimensions and the carriers you use, and we will map them against the thresholds.