How to buy online and return less

Somewhere between a fifth and a third of clothing bought online goes back. That is a lot of wasted time, a lot of shipping, and — increasingly — a lot of money, as free returns quietly disappear.

Almost all of it comes down to four things.

1. Buying the size instead of the measurements

The most common reason a garment goes back is that it did not fit, and the most common reason it did not fit is that the size was chosen from the letter or number rather than from the numbers behind it.

The fix takes five minutes once: measure a garment you own and like, flat, and keep the numbers. Chest across, shoulder seam to seam, length from the high shoulder point, sleeve. Now you can compare garment to garment instead of guessing what a brand means by "regular".

See how to read a size chart for the detail, and why the same size fits differently for why the number alone was never going to work.

2. Ordering two sizes "to be safe"

This feels like risk management and is usually the opposite. Bracketing doubles the chance that something goes back, guarantees a return trip, and — at a growing number of retailers — now costs money or gets your account flagged.

It is defensible in one situation: a brand you have never bought from, in a style with no give, where you are genuinely between sizes on the chart. It is not a default.

The alternative is to spend the five minutes on measurements, and where you are still unsure, buy the one the fabric argues for: stretch, size down; rigid, size up.

3. Not reading the composition

A surprising share of returns are not about fit at all. They are about the garment feeling different from what was expected — thinner, stiffer, shinier, scratchier.

The composition and weight tell you most of this before it arrives. A 140 GSM t-shirt will be light and slightly sheer. A high-polyester shirt will feel smoother and cooler to the touch and hold smell. A wool blend under about 50% wool will behave more like the other fibre than like wool.

If a product page gives you no weight, no yarn detail and no construction, treat the purchase as higher risk — and read reviews for the words "thin", "stiff" and "cheap feeling", which are what people write when the fabric disappoints.

See what "100% cotton" actually tells you.

4. Buying under time pressure

The highest-return category in most people's shopping is "I need something for Saturday". Time pressure removes exactly the steps that prevent returns — the measuring, the review-reading, the waiting.

It is also, not coincidentally, the highest cost-per-wear purchase most people make.

There is no clever fix. The only real one is to notice when you are in it, and to lower your expectations of the outcome accordingly.

The checks worth doing every time

They take about three minutes in total.

• Compare the garment measurements to your reference garment. Not your body — the thing you already own that fits.
• Check the model's height and the size worn. Then adjust for your own height. Proportions in product photos are reliable even when the fit is pinned.
• Read the composition and the weight. If neither is published, that is information too.
• Read the three most recent critical reviews. Not the average — the recent negative ones, which is where sizing changes and quality changes show up first.
• Check the returns policy before buying, not after. Window length, who pays, and whether the item is excluded.

When to return without hesitating

The opposite failure is real too: keeping something that does not fit because returning it is a hassle. That garment has an infinite cost per wear.

Return it if the shoulders are wrong, if you have to plan an outfit around hiding something about it, or if it has sat unworn for a month with the tags on. None of those improve.

The short version

• Measure a garment you like, once, and keep the numbers. It prevents more returns than anything else.
• Bracketing two sizes is not risk management, and it is getting expensive.
• Most "it felt wrong" returns were predictable from the composition and weight.
• Read the recent critical reviews, not the average.
• And return the things that do not fit. Keeping them is not thrift.