If you've started selling clothes on Vinted, Depop or eBay, packaging is one of those things you figure out fast. The first time you pay over the odds for a small pack of bags from the Post Office, or order the wrong size and spend ten minutes wrestling a hoodie into a bag meant for a t-shirt, you realise it's worth getting sorted properly.
This guide covers where to buy postage bags for Vinted and other resale platforms, what sizes you actually need for clothing, and how to keep costs down as your selling volume grows.
What kind of bags do you need for selling clothes online?
For clothing, polythene mailing bags are the standard choice. They're lightweight, waterproof, and seal cleanly with a peel-and-seal strip. They don't add meaningful weight to your parcel, which matters when you're trying to keep postage costs low, and they look tidy when a buyer receives their order.
Grey mailing bags are the most popular option among clothing resellers. They're opaque so the contents aren't visible, they photograph well if you're showing packaged items on your profile, and they have a clean, professional look without needing to spend money on custom printed packaging.
You'll also see them described as shipping bags for clothes, parcel bags, or postage bags depending on where you're shopping. They all refer to the same product. The terminology varies more than the actual bags do.
Where to buy postage bags for Vinted
There are a few places you can buy postage bags for Vinted, and they're not all equally good value.
Packaging suppliers
The best option for most regular sellers. A dedicated packaging supplier like Mr Bags stocks a full range of mailing bag sizes, offers bulk pricing, and will have consistent stock rather than selling out of the most useful sizes at short notice.
Buying from a supplier directly rather than through a marketplace or a general retailer means you're paying closer to trade price. If you're sending five or ten parcels a week, the difference in cost per bag adds up quickly over a month.
Our mailing bags are available in a range of sizes suited to everything from a single t-shirt up to a large coat, and can be ordered in quantities that make sense for how often you're shipping.
The Post Office
Convenient if you need bags urgently, but expensive per unit and limited in range. The Post Office does stock some postage bags but the selection is narrow and you're paying a premium for the location and convenience. Fine for one or two bags in a pinch, not practical if you're selling regularly.
Supermarkets and stationery shops
Similar story. You'll find small packs of mailing bags in WHSmith, Ryman and occasionally larger supermarkets, but the range is limited to a handful of sizes and the unit price is higher than buying from a packaging supplier. These work if you're in a hurry and don't have anything else available.
Online marketplaces
Amazon and similar platforms have a lot of options, and you can find reasonably priced bags on there. The downside is variable quality. Not all sellers list useful specifications like bag thickness, and reviews can be inconsistent. If you do buy from a marketplace, look for listings that state the micron thickness clearly. For clothing, you want at least 50 microns. Anything thinner than that will feel flimsy and is more likely to split during sorting.
Where to buy parcel bags for Vinted without overpaying
The biggest difference in cost comes from order quantity. Mailing bags are priced on a sliding scale: the more you buy, the lower the unit cost. A pack of 25 bags from a general retailer might cost you 30 to 40 pence per bag. The same quality bag from a packaging supplier bought in a pack of 500 can come down to a few pence each.
If you're new to selling and not yet sure how many bags you'll get through, start with a smaller quantity across two or three sizes to see what you actually use most, then order larger quantities of those once you know. Most regular Vinted sellers find they use a small, medium and large option to cover the vast majority of what they send.
What size postage bags do you need for clothes?
Getting the size right is worth spending a minute on. A bag that won't seal properly because it's too small, or one that's so oversized the item rattles around, can both cause problems in transit.
Here's a practical guide to the most common clothing items sold on Vinted, Depop and eBay:
What size mailing bags for t-shirts and light tops?
A standard adult t-shirt folded flat fits in a bag at around 250mm x 350mm. This size also works for vests, light blouses, polo shirts and most single lightweight garments. Children's clothing fits smaller still, around 170mm x 230mm to 200mm x 300mm.
What size shipping bags for jeans and trousers?
Folded jeans are denser than they look. A typical pair fits well in a 350mm x 500mm bag. Wider styles or cargo trousers may need 400mm x 500mm to give enough room to seal flat.
What size postage bags for clothes like hoodies and jumpers?
Heavier knitwear and hoodies need more space than their folded dimensions suggest, because the extra thickness means a tight bag won't seal properly. A 400mm x 500mm or 430mm x 560mm bag works well for most hoodies and sweatshirts.
Dresses and jumpsuits
Short and casual dresses fold down to a similar size as a t-shirt, so 350mm x 500mm covers most. Maxi dresses and jumpsuits are closer to hoodie territory. Fold the item first and measure it if you're unsure.
Coats and jackets
These need large shipping bags. A folded coat rarely gets below 450mm x 600mm, and a heavier winter coat may need more than that. This is the one category where getting the size right matters most, because squeezing a coat into a bag that's too small almost always means a failed seal or split packaging before it reaches the buyer.
Our full size range covers all of these, with clear internal dimensions listed for each product.
How to pack bags for shipping clothes
Packing neatly is worth doing well, especially on platforms like Vinted and Depop where buyers can leave feedback on packaging. A tidy parcel makes a good first impression and reduces the chance of something going wrong in transit.
Here's how to pack mailing bags properly for clothing:
- Fold the garment as flat and evenly as possible. Press out any excess air from heavier items like hoodies before folding.
- If the item is likely to get wet in transit or if the buyer would be upset by any moisture contact, place it in a thin polythene sleeve or fold it inside tissue paper before bagging. This is good practice for anything delicate or expensive.
- Slide the garment into the mailing bag and push it to the base so it sits flat. The item should have a small amount of space on each side rather than pressing hard against the seams.
- Remove the backing strip from the seal and fold the flap down firmly. Run your fingers along the full length of the seal to make sure it's properly closed. A half-sealed bag is one of the most common causes of items arriving damaged.
- Apply your shipping label to the front of the bag on a flat surface, smoothing out any air bubbles so the barcode scans cleanly at the Post Office or collection point.
How to package multiple items in one bag
If a buyer has purchased more than one item, or if you want to send a couple of garments together, fold each item individually first, then stack them and measure the combined pile before choosing a bag. It's nearly always better to go one size up than to force items in and risk the seal giving way.
For heavier bundles, check the weight before printing a label. Vinted and eBay both generate labels based on the weight and size you declare when listing, so if the combined parcel is heavier than you estimated, you may need to adjust before sending.
A few things worth knowing as a Vinted or eBay seller
Royal Mail's small parcel dimensions are 450mm x 350mm x 160mm, with a maximum weight of 2kg for standard services. The majority of single clothing items will fall well within this, but if you're sending a heavy coat or a bundle of garments, check the weight first.
Vinted generates prepaid labels at the point of sale based on the size and weight bracket you select when listing. Getting this right upfront means you won't be turned away at the Post Office or Evri drop-off point because the parcel doesn't match the label.
Buying bags in slightly larger quantities than you immediately need is almost always worth it. Running out mid-week and needing to make an emergency trip to a supermarket for overpriced bags is a situation that's easy to avoid with a small stock kept at home.
If you're just getting started and want to work out which sizes to stock, browse our mailing bags range or get in touch and we can help you put together a starting order that covers the most common clothing sizes without committing to large volumes you might not need yet.
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