How to determine the quality of clothing before purchasing

Last Friday, my client was disappointed to find a €1,500 jacket in the fitting room of a luxury boutique. On the outside, it looked like gorgeous Italian wool, and the magic was enhanced by the perfect warm light and a glass of champagne from the consultant. But as soon as I turned the garment inside out, the illusion of status crumbled: a crooked overlock, pulled threads, and a stiff fusible interfacing that made the front look like cardboard.

The ability to read a garment's structure from the inside out is a basic skill for a conscious wardrobe. We've already covered textile compositions in more detail in our a complete guide to choosing quality clothing Today we'll look at the physics of cutting. I call this approach forensic shopping (Detective Shopping) - It teaches how to determine the quality of a garment's tailoring solely by its construction, completely ignoring the hypnosis of logos and price tags.

The Price Tag Myth: Why Expensive Brands No Longer Guarantee Quality Fit

The fast fashion industry has radically transformed not only the mass market but also the high-end luxury segment. Premium brands have realized that customers primarily respond to perceived quality: beautiful fabric, striking color, and marketing. But actual quality—the invisible geometry of a garment—can yield colossal savings.

According to a McKinsey report State of Fashion By 2024, the average lifespan of clothing has been cut in half over the past 15 years. And it's not just cheap fabrics. During the recent Paris Fashion Week, I had the opportunity to examine a coat from a famous fashion house up close. Instead of the traditional frameless horsehair lining that gracefully hugs the figure, they used a cheap, continuous, fusible interlining. This saves the manufacturer about four hours of manual labor per garment, but the coat loses its anatomical fit and becomes blistered after dry cleaning.

"The price of an item today reflects the brand's marketing budget, not the cost of a tailor's hourly labor. True quality is always hidden on the inside."

How to determine the quality of clothing: basic markers of "expensive" production

The first thing a professional textile engineer looks at is stitch density, or SPI (stitches per inch). This is a mathematically precise indicator of whether a factory is saving on thread and machine time.

For cotton, viscose, and silk, the standard for quality stitching is considered to be 10–12 stitches per inch (about 4–5 stitches per centimeter). Fast fashion brands often stitch items at a density of 6–8 stitches per inch. Why is this critical? Long, sparse stitches create a weak seam. The slightest tension will cause the seam to "gape," revealing the threads, and after the first wash, it will become deformed.

Always perform a tension test in the fitting room. Hold the side seam of a shirt or pants with both hands and gently pull them in opposite directions, simulating the natural tension of the fabric on your body. If you can see the threads holding the pieces together when held up to the light, the seam will come apart after a month of wear. A high-quality stitch should not wrinkle the fabric or constrict the silhouette. If the seam "wavy" right on the hanger, no amount of ironing at home will fix it; the problem is with the thread tension on the machine.

Finishing Edges: French Seam vs. Cheap Overlocker

There is a counterintuitive insight that surprises many of my clients: a neat, even serger is Not A sign of high quality. Overlocking (a zigzag stitch that simultaneously cuts the fabric) is the cheapest, fastest, and most efficient way to finish seam allowances. While it does prevent fraying, it also indicates that the manufacturer has chosen the most cost-effective method.

In high-quality clothing, the edges of the fabric are hidden. For silk, chiffon, and fine cotton, a French (double-turned) seam should be used. With this technique, the edge of the fabric is tucked into the seam itself, creating a neat, tight roll without protruding threads. This increases fabric consumption and sewing time, so brands in the €30–€80 price range almost never use it.

But there is an important limitation: A French seam doesn't work on thick fabrics (such as heavy wool or tweed) as it will create a rough seam. For such high-status garments, the edges are finished with bias binding (Hong Kong seam). This looks like a thin, contrasting border around each inner edge.

The Architecture and Physics of Things: Secrets of a Perfect Fit

Have you ever noticed how some inexpensive jeans or trousers start to twist uncomfortably on the leg, causing the outer side seam to gradually move forward toward the knee? This isn't due to your gait. It's a gross misalignment of the grain line.

When cutting, the pattern should be strictly parallel to the fabric selvedge (grain grain). However, to save material at the factory, pattern cutters often slightly angle the pattern, squeezing more pieces onto a single roll of fabric. This disrupts the physics of stretch: after washing, the fibers try to return to their natural position, causing the pant leg to curl. It's difficult to examine this defect before purchasing, but if you notice a pant leg hanging asymmetrically on the hanger, don't buy it.

The second most important design element is the armhole (the opening for the sleeve). Cheap jackets often have a large armhole, dropped almost to the waist. This allows the jacket to be sold to as many people as possible, regardless of arm size. However, as soon as you raise your arm in such a jacket, the entire garment rises up, revealing your midriff. A high-quality cut implies a high, anatomical armhole: the arm moves freely, while the jacket itself remains stationary.

Print registration: a litmus test for the manufacturer

If you're choosing a checked, striped, or large geometric patterned item, the quality is checked in three seconds. Look at the side seams, the junction of the sleeve and shoulder, and the patch pockets.

In high-quality clothing, the print lines should perfectly align, flowing from one piece to the next. Perfectly matching checks increases fabric consumption by 20–30% due to the need to match the pattern. This is why mass-market clothing tends to sew haphazardly, turning side seams into visual chaos that disrupts the figure's proportions.

Seam allowances: room for error and adjustments

Historically, clothing was designed to last for decades. Tailors would leave generous seam allowances (excess fabric inside) to allow for adjustments if the client gained weight or to pass on the garment as an heirloom. Today, seam allowances are the first casualty of cost-cutting.

I had a telling case. A client brought in a gorgeous pair of vintage Celine trousers and a pair of modern trousers from a trendy Scandinavian brand (bought for €350). We needed to make both pairs one size wider in the hips. The vintage trousers had a luxurious 2.5 cm of leg allowance on each side—the tailor widened them in half an hour. The modern trousers had been overlocked right to the root, leaving a measly 0.5 cm. Adjusting the fit was physically impossible.

Quality standard: the allowance on the back seam of trousers and side seams of skirts should be at least 1.5–2 cm. This allows for adjustments to suit your figure, which is the foundation of a sustainable wardrobe. If there's no allowance, the garment is a one-time wear item.

By the way, we write in detail about creating a functional wardrobe in our materials about basic bags And the best wardrobe investments , where we also pay attention to the design details.

Attention to detail: lining, hinges and fittings

Even if the outer fabric is impeccable, the manufacturer can cut corners on the parts that directly touch your body. First and foremost, this is the lining. Avoid 100% polyester or acetate. Acetate doesn't breathe, doesn't wick away moisture, and turns even the most expensive wool jacket into a personal sauna. High-quality linings are made of cupro (a type of viscose) or a viscose-silk blend. They are cool to the touch, slippery, and absorbent.

A separate professional marker is buttonholes. High-quality jackets and coats use a "keyhole buttonhole"—a buttonhole with a rounded opening at one end that comfortably accommodates the shank of a button. The overlock itself should be tight, with no protruding fibers. Cheap brands simply use a straight opening with a loose overlock.

Pay attention to how the buttons are sewn on your outerwear. They shouldn't be sewn flush against the fabric! There should be a thread "shank" (a column of thread 2-3 mm high) under the button, which allows room for the button flap when the garment is buttoned. Without a thread "shank," the buttoned garment will wrinkle unsightly around the buttons.

Forensic Shopper's Checklist: 5 Steps in the Fitting Room

To avoid getting lost in the store, I recommend my clients perform this quick 5-step test before taking an item to the checkout. This skill quickly becomes automatic.

1. Turn inside out. Evaluate the seam allowances (is there at least 1.5 cm of fabric allowance) and the edge finishing method. Look for covered seams or bias binding on premium items.
2. Do a tension test. Gently tug the side seam. If any gaps or loose threads are visible, the item won't survive the season.
3. Check the symmetry. Fold the collar or lapels in half. They should be absolutely identical in size and shape. Check the print alignment on the pockets.
4. Conduct an ergonomics test. Put the garment on and fasten all the buttons. Raise your arms, hug your shoulders, and sit down. The armholes shouldn't be tight, and the fabric at the back shouldn't be bursting at the seams.
5. Evaluate the fittings. Check the density of the buttonhole stitching and the presence of a “foot” on the buttons.

The integration of this mindful approach fits perfectly with modern wardrobe management tools. For example, using the wardrobe tracking feature in MioLook , you can analyze the CPW (Cost Per Wear) metric. An expensive, but well-tailored garment with perfect seams will ultimately cost you several times less than a budget blouse that will warp after the second wash.

Quality isn't what's written on the label. Quality is how a garment is sewn from the inside, when no one (or so the manufacturer thinks) is looking. Make it a habit to check the inside, and your wardrobe will be filled with pieces that will serve you for years, maintaining an impeccable fit.