Courier satchel sizes look like a small operational detail until the first time a hoodie refuses to fit into an A4 mailer at 4.55pm. Pick a satchel too small and you end up splitting orders, straining seams and risking damage claims. Pick one too big and you pay your carrier to move air. This guide covers the standard sizes sold in Australia, a reliable way to measure your products, and how to settle on two or three satchel sizes that cover your whole catalogue. Every size mentioned is part of the QIS courier bags and postage satchels range, made from 100% recycled plastic and dispatched Australia-wide.
Why Satchel Size Matters More Than You Think
Satchel choice feeds straight into your postage bill. Most Australian carriers price satchel services in tiers, and many apply cubic weight once parcels get bulky, so an oversized satchel can push an order into a dearer bracket for no benefit. Undersized satchels cause different problems: stressed seams, popped seals, products creased into odd shapes and a scrappy unboxing experience. Standardising on a small set of sizes also speeds up the packing bench, because staff stop hunting through mixed cartons and satchel forecasting becomes simple multiplication. Satchels sit within the broader mailing bags family alongside padded mailers and paper mail packs, so it pays to choose deliberately rather than inherit whatever the last supplier order happened to include.
Standard Courier Satchel Sizes in Australia
QIS satchels follow familiar paper-size naming where a close match exists, then step up through larger footprints for bulky goods. All nine sizes come in white or black. Flat dimensions describe the physical satchel; once an item has any depth, usable space shrinks a little, which the measuring method below accounts for. Each size in the table links straight to the product page.
| Satchel size | Typically fits |
|---|---|
| A5 (150x240mm) | Jewellery, cosmetics, phone accessories, gift cards |
| A4 (240x320mm) | T-shirts, books, swimwear, small accessories |
| A3 (310x400mm) | Folded shirts and dresses, kids clothing, soft toys |
| 350x480mm | Jeans, hoodies, orders of two or three garments |
| 440x500mm | Multi-item apparel orders, towels, small homewares |
| A2 (510x560mm) | Bulky knitwear, jackets, throw rugs |
| 600x600mm and 650x700mm | Pillows, bundled orders, bulky soft goods |
| 750x900mm | Quilt covers, large soft furnishings, oversized apparel |
Fit suggestions assume soft or semi-flexible goods. Rigid items with hard corners usually travel better in a box with cushioning than in any satchel.
How to Measure Your Products for a Satchel
Satchels are flat and products are not, so borrow this rule of thumb from the warehouse:
- Measure your packed item: length, width and depth, including any tissue wrap or garment bag.
- Account for depth. Aim for a satchel at least as wide as the item width plus its depth plus 20mm, and as long as the item length plus its depth plus 60mm, which leaves room for the seal flap.
- Test pack one real order. The satchel should close without strain and sit reasonably flat so the shipping label scans first go.
If an order only just fits, size up. The cost difference between neighbouring satchel sizes is small compared with the cost of a damaged product or a return.
White, Black or Printed: Which Satchel Suits Your Brand?
White courier satchels
White is the default for good reason. Labels print crisp against the bright surface, barcodes scan cleanly and parcels photograph well for order-update emails. The QIS white range runs from A5 (150x240mm) right up to 750x900mm, all made from 100% recycled plastic.
Black courier satchels
Black satchels hide their contents completely, which customers buying gifts or anything private appreciate. They also disguise scuffs picked up in transit, so parcels arrive looking sharper after a rough ride. The black range mirrors the white range size for size.
Custom printed tamper-proof satchels
For higher-value goods, custom printed tamper-proof courier bags add a tamper-evident closure and carry your branding in two colours on both sides. They come in 440x340mm and 510x510mm and turn every parcel into a moving advertisement.
Popular Picks for Online Stores
Most stores cover the bulk of their orders with two or three sizes. These three make a sensible starting spread; test them against your ten best sellers before committing to pallet quantities.
Popular picks, ready to ship today:
Every size above also comes in black, and the full white and black range is on the collection page.
Matching Satchel Sizes to Carrier Rate Tiers
Every carrier draws its satchel tiers a little differently. Australia Post, Sendle, CouriersPlease and Aramex all publish size or weight brackets, and those brackets shift from time to time, so check the current cut-offs before locking in packaging. Three habits keep postage predictable. Weigh and measure your ten most-shipped products and match each to the smallest satchel that passes the measuring test above. Standardise on two or three sizes so rate shopping stays simple. Re-check the maths whenever a carrier updates pricing. If a product hovers just over a tier boundary, a slimmer satchel or a tighter fold can pull it back under and save money on every subsequent order.
Packing Tips That Prevent Damage
A few habits prevent most satchel mishaps. Fill, do not stuff; a satchel bulging at the seams is one conveyor belt away from splitting. Satchels offer no cushioning of their own, so wrap breakables in bubble wrap first, or ship small fragile items in a padded Jiffy bag instead. Poly satchels are water resistant and shrug off rain on the delivery run, but they are not watertight, so bag moisture-sensitive goods internally. Seal once and seal straight; the self-seal strip is permanent, so line it up before pressing down. Finally, think about the after-life: QIS satchels are made from 100% recycled plastic, and if sustainability sits at the centre of your brand you can also browse the reusable and eco friendly bags range for complementary options.
Buying Satchels in Bulk
Satchels are consumables, so the unit price compounds across every order you ship. Cartons of 100 keep the packing bench stocked, and larger volumes across multiple sizes qualify for bulk pricing through the request a quote page. QIS dispatches same day on weekday orders placed before 12pm, delivers Australia-wide including Sydney, Melbourne, Brisbane, Perth, Adelaide and regional areas, and backs its pricing with a 5% price-beat guarantee. Prefer to talk it through? Call 1800 555 343.
Courier Satchel FAQs
What is the most popular courier satchel size for eCommerce?
For apparel and accessories stores, A4 (240x320mm) and A3 (310x400mm) handle most single-item orders. Audit a week of your own orders before deciding; your product mix decides, not the industry average.
Are courier satchels waterproof?
Poly satchels are water resistant and protect contents from rain during normal handling. They are not sealed against soaking or submersion, so add an internal liner for moisture-sensitive products.
Can courier satchels be reused?
The self-seal strip is designed to close once and stay closed, which is what makes it secure in transit. An opened satchel will not reseal cleanly, so treat satchels as single-use packaging and check current soft plastic recycling options in your area, as programs vary.
What size satchel do I need for clothing?
A single t-shirt travels well in an A4 satchel. Jeans or a hoodie need the 350x480mm size, and orders of several garments usually step up to 440x500mm or A2 (510x560mm). Test pack your heaviest seller to confirm.
Are black and white satchels available in the same sizes?
Yes. The QIS black range mirrors the white range exactly, from A5 (150x240mm) through to 750x900mm, so you can switch colours without changing your packing process.
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