Quick Answer: The efficient way to thrift is to check the composition label before you look at the garment. Four signals do most of the filtering: natural fiber content over 70%, a country of manufacture that suggests an older production era, a lining listed separately (a sign of real construction), and fabric weight you can feel through the tag hand. This takes about 30 seconds per rack section and eliminates 80% of items without a single try-on.

Most people thrift by browsing until something catches their eye. Then they discover the fabric is a papery polyester and the seams are overlocked.

The people who leave with good things do it in the opposite order.

Why start with the label?

Because fabric quality is the variable you cannot fix and cannot see from three feet away.

Style, size, and even fit are all correctable or at least assessable at a glance. Fiber content is not visible from a distance and determines almost everything about how a garment will wear. A beautiful cut in a thin polyester will pill in a month; an unremarkable cut in a good wool will last a decade.

Starting with the label also solves the real problem with thrifting, which is time. A secondhand rack has 200 items and maybe four worth owning. Browsing visually means evaluating all 200 slowly. Label-first means running your fingers along the collars, glancing at tags, and stopping only where the composition is promising.

In practice this is a physical technique. You walk the rack with one hand on the shoulders, flipping collars, reading only the tag. You will cover a section in a couple of minutes and stop three or four times. Everything that stops you is worth a real look.

What are you actually looking for?

Four signals, in rough order of importance.

Natural fiber content over 70%. Wool, cotton, linen, silk, cashmere. A small amount of synthetic is fine and often good — 3% elastane in a trouser, 10% nylon in a sock-weight knit. What you are filtering out is 100% polyester and heavy acrylic blends, which dominate modern secondhand and are almost never worth the hanger space.

A separately listed lining. If the tag says shell and lining as two lines, the garment was built rather than assembled. Unlined jackets and skirts in the secondhand pile are usually the cheap end of their era.

Older-era manufacturing markers. Union labels, older country names, and single-size tags rather than range sizing all point to production periods with different quality norms. You do not need to be an expert — you just need to notice when a tag looks unlike a modern one, which is a very quick judgement.

Fabric hand through the tag. As you read the tag, pinch the fabric next to it. Weight and density are the strongest predictors of longevity and your fingers assess them faster than your eyes do.

What should you check once something passes?

Now the garment gets a real 90-second inspection, in this order.

Underarms first. This is where secondhand fails most often — discoloration, thinning, and deodorant crystallization. It is also the least repairable damage there is. If the underarms are gone, put it back regardless of everything else.

Then seams, stretched between both hands. Look for holes at the stress points, popped stitches, and any place the fabric has thinned. Small seam repairs are cheap; thinned fabric is terminal.

Then the zipper, all the way up and all the way down. A replacement is $25 to $60, which is fine on a good coat and not fine on a $6 skirt.

Then hold it up to a light. Moth damage and thin spots that are invisible on a rack show immediately backlit. On any wool or cashmere, this check is mandatory.

Then the shoulder seam against your own shoulder. The one measurement that cannot be altered affordably. If the shoulder does not work, nothing else matters.

5 Mistakes Everyone Makes Thrifting

Mistake one: buying for the potential. I could take this in. You could, and you will not, and if you did it would cost $40 on a $12 garment. Buy things you would wear this week. The alteration exception is hemming, which is cheap and quick enough that people actually follow through.

Mistake two: ignoring smell. Smoke and mildew are frequently permanent, especially in wool. Smell the underarms and the interior, not the outside. If there is any mildew note, leave it; that is a mold colony in the fibers and washing rarely clears it.

Mistake three: trusting the size on the tag. Sizing has drifted enormously over the decades and varies wildly by brand and era. Measure against a garment you own — carry the waist measurement of your favorite trousers in your phone and use a hand span as a rough ruler.

Mistake four: shopping without a list. The whole appeal of thrifting is serendipity, which is exactly why it produces closets full of interesting things that go with nothing. Carry three specific gaps in mind. You will still find surprises; you will just also find useful items.

Mistake five: skipping the men’s section. Oversized shirts, knitwear, and outerwear are frequently better made in the men’s racks and the same price. The white shirt situation alone justifies it — men’s shirts are typically better fabric at every price point.

How does the season change what you look for?

Timing is one of the real advantages of secondhand, and most people get it backwards.

Shop the opposite season. Right now, at the end of summer, the coats and wool knits from last winter are still on the racks, cheap and picked over by nobody. By October the same rail will be triple the price and half the size. This is the single biggest lever in secondhand shopping.

Late August through September is peak donation season in most places, because people clear closets at the summer-to-fall change. The racks turn over fastest right now, which means going more often matters more than going longer.

Wool and cashmere are the categories where secondhand wins hardest. A good wool coat at $30 is a genuinely different value proposition from a $30 new coat, which cannot exist. Focus your energy there rather than on categories where new is affordable.

Check for the transitional-weight pieces everyone else overlooks — unlined blazers, cotton overshirts, fine-gauge knits. These are the connectors that make a wardrobe work in September, they are boring on a rack, and they are therefore cheap.

FAQ: Thrifting Questions, Answered

How do I get smells out of secondhand clothes?

Air outdoors for a full day first. For washables, a soak in cool water with a cup of white vinegar works well. Smoke and mildew in wool are usually permanent.

Is it worth dry-cleaning something before I know it fits?

No. Try it on, wear it around the house, and only pay for cleaning on something you have committed to.

What is the single best secondhand category?

Wool coats and knitwear, bought in the off-season. The price gap versus new is largest and the quality gap versus modern equivalents is most favorable.

TL;DR:

• Thrift label-first, not eye-first — fiber content is the thing you cannot see or fix.
• Look for 70%+ natural fiber, a separately listed lining, older-era tags, and good fabric weight.
• Once it passes: check underarms, seams, zipper, backlit for moth holes, and shoulder fit — in that order.
• Never buy for potential, and always check the men’s section for shirts and knitwear.
• Shop the opposite season. Wool coats are cheapest right now, at the end of summer.

Next trip, walk one full rack touching only collars and tags. You will cover it in three minutes and stop at better things than browsing would have found.