Courier Bag Sizes Chart: Which Size for Which Product

Most new sellers buy courier bags the same way: one bundle of "medium" bags and hope everything fits. Then a kurti needs to be folded three times, a pair of jeans won't close, and a pair of earrings rattles around inside a bag meant for a bedsheet. Each of these costs money, either in damaged products, open flaps or extra shipping.

This chart lists the courier bag sizes Indian sellers actually use, what usually fits in each one, and how to work out your own size in a minute.

Courier bag sizes chart (inch and cm)

Size (W × L, inch)	Size (cm, approx.)	What usually fits
6 × 7 / 6 × 8	15 × 18 / 15 × 20	Jewellery, watches, phone covers, socks, small cosmetics
6.5 × 8	16.5 × 20	Meesho small items: earrings, hair accessories, mobile accessories
8 × 10 / 8 × 12	20 × 25 / 20 × 30	T-shirts, leggings, innerwear sets, kids' clothes, books
8.5 × 11	21.5 × 28	Folded tops, dupattas, A4 documents, slim boxes
10 × 12 / 10 × 13	25 × 30 / 25 × 33	Shirts, kurtis, track pants, slim boxed items
10 × 14	25 × 35.5	Kurti sets, jeans, nightwear, folded sarees (light)
12 × 14 / 12 × 16 / 12.5 × 16	30 × 35.5 / 30 × 40.5 / 32 × 40.5	Sarees with blouse, hoodies, suit sets, single bedsheets
14 × 18	35.5 × 45.5	Jackets, double bedsheets, combo packs, lehenga (folded)
20 × 23	51 × 58.5	Blankets, quilts, curtains, large soft toys

The "what fits" column is a starting point, not a rule. A heavy Banarasi saree and a light chiffon saree need different bags. Always check with your own folded product.

How courier bag size is written

A bag sold as 10 × 14 inch is 10 inches wide (the side with the opening) and 14 inches long, measured from the bottom up to where the flap starts. The flap with the adhesive strip is extra, usually 1.5 to 2 inches, and is not part of the size. So when a seller says "10 by 14", the usable pocket is 10 × 14.

Some suppliers write length first. If a listing says 14 × 10, it is the same bag. What matters is which side has the opening: your product goes in through the width.

How to work out the right size for your product

A courier bag is flat, but your product is not. The bag has to wrap over the product's thickness on both sides, so the thickness gets added to both the width and the length.

• Bag width = product width + product height (thickness) + about 1 inch
• Bag length = product length + product height + about 1 inch

Example: a folded kurti measures 11 × 8 inch and is 1.5 inch thick. Width = 8 + 1.5 + 1 = 10.5 inch, length = 11 + 1.5 + 1 = 13.5 inch. A 10 × 14 bag will be tight on width, so a 12 × 14 or 12 × 16 is safer. If you fold it a little narrower, to 7.5 inch, the 10 × 14 works.

You don't have to do this by hand. The free polybag size calculator on MarkRTD SellerTool takes your length, width and height in inches or cm and shows the bag size, with the bags that fit it.

Why the smallest bag that seals is the right one

A bag that is too big is not "safe extra space". It causes three problems:

• Higher shipping. Couriers and marketplaces charge on the higher of actual weight and volumetric weight. A loose, puffy parcel measures bigger at the hub and can move into the next weight slab. On a ₹199 product, one slab can wipe out your margin.
• Product movement. Loose products shift, fold and crease in transit. Glass bangles and cosmetics break more in big bags, not less.
• Easy tampering. Extra plastic gives room to cut and re-seal near the flap without it showing.

A bag that is too tight is just as bad: the flap doesn't stick fully, the seam splits, or the label wraps over the edge and the courier can't scan it.

So the rule is simple: the smallest bag that closes flat and seals across the full flap.

Marketplace bags have their own sizes

If you sell on Meesho, Flipkart or Amazon and use their branded or barcode bags, the size list is fixed by the bags available:

• Meesho barcode polybags commonly run 6.5×8, 8×10, 8×12, 10×12, 10×14, 12×14 and 12.5×16 inch. See Meesho polybag size for what fits in each.
• Flipkart security bags come as 6×7, 8.5×11, 10×13, 12.5×15, 14×18 and 20×23 inch, among others.
• Amazon courier bags are commonly 6×8, 10×14, 12×14 and 12×16 inch.

Plain (unbranded) bags are the most flexible because you can use them across marketplaces and for your own website orders.

How many sizes should a small seller stock?

Most sellers do fine with three sizes: one small, one medium and one large for their own range. A clothing seller might keep 8×10, 10×14 and 14×18. A jewellery seller might keep 6×8 and 8×10 only. Look at your last 100 orders, see which products sold, and buy sizes for those, not for every product you might list someday.

Check the thickness too. For clothing, 50 to 60 micron LDPE is the common range and holds up well in courier hubs. Our polybag size guide explains thickness, POD vs non-POD and colour in more detail.