Customers check the hem. Not consciously — the shirt comes out of the mailer, their thumb finds the bottom edge and rubs it, before they have looked properly at the artwork you spent three weeks on.

The floor moved

Fabric weight is grams per square meter, except in the US, where blanks are specced in ounces per square yard. One oz/yd² is about 33.9gsm, so the Bella+Canvas 3001 at 4.2oz is roughly 142gsm and the Gildan 5000 at 5.3oz is roughly 180gsm. Those are the American starting point; Europe starts on Stanley/Stella, B&C, Fruit of the Loom and AWDis, Australia on AS Colour, all in much the same band.

Mass retail has since moved past it. Call this a generalisation, because it is one: the heavy boxy tee has gone from specialist to ordinary, and shoppers who have never heard the word gsm have handled enough of it to notice when yours feels thin. They just decide the price is wrong and close the tab.

What the weight actually costs

More yarn per square meter is most of the gap. Then the knit, because denser fabric takes longer on the machine. Then freight, on every order, forever. Cost tracks fabric area, so a 2XL costs more than a small at any weight; going heavier raises the cost per square meter and widens that gap, which is why upcharges steepen as bodies get heavier.

Made-up but ordinary numbers, your own currency. A light body lands at $9, you retail at $30, you keep $21. Move to a good heavy body at $13, hold the same $30, and you keep $17 — a pay cut with extra steps. Reprice to $42 and you keep $29 on a product costing four dollars more. Four dollars up, twelve across. That asymmetry is the whole argument, and it only exists if you reprice. Airventory's heavyweight crew tee starts at $10.50, charged after your customer has paid you.

Heavier cotton prints better, with one caveat

Two axes get muddled: weight and yarn. Combed yarn has the short fibers removed before spinning; carded yarn does not, and those short ends are what stand up off the face and fuzz an edge. Open-end (rotor) yarn is a separate fault: coarser, weaker, quicker to pill than ring-spun. The 3001 is combed and ring-spun at 142gsm, so good yarn is not the same thing as heavy fabric.

What a smooth, dense, low-pile face buys you on DTG is fewer protruding fiber ends to carry ink outward and less lateral wicking, which is what holds a crisp edge on fine linework and small type. The ink is water-based pigment, not dye: the water evaporates and a binder resin holds the pigment on the fiber surface. Which is also why pretreat matters — dark garments need a coat pressed in first so the white underbase sits up instead of sinking, and over-applying it leaves a faint glossy rectangle around the design.

DTF is different: the design prints onto PET film, is dusted with adhesive powder, cured, then heat pressed on as a patch — a plastic layer, stiffer than whatever it lands on. On a 140gsm body a large transfer fights the drape and you can see the panel it sits on. On 280gsm, the fabric wins.

What to do this week

Find the weight of every blank you sell; if the sheet is in ounces, multiply by 33.9. Put the number on your product page — heavyweight buyers look for it.

Nobody emails to say the fabric felt thin. They just don't order twice. So order your best seller on a heavier body, hand both versions to someone who doesn't know which is which, and watch which one they keep holding. Airventory's blanks run 250 to 450gsm combed cotton and samples carry no minimum. A supplier who won't sell you a sample has already answered the question.