Everyone checks the brand name. Almost no one reads the tag sewn into the side seam, and that’s the one that tells you whether you’ll still be wearing the piece in two years.
Fiber content is not the whole story, but it’s a solid first read. Here’s how to decode it, fiber by fiber, so your next fit check starts before you even try something on.
Start with the order
Fibers are listed from most to least. A tag that reads 80% cotton, 20% polyester is mostly a cotton story. One that reads 15% wool, 85% acrylic is mostly an acrylic story with a wool cameo. Read the first line, then look at what’s supporting it.
Also check the care instructions. “Dry clean only” on a piece you plan to wear weekly is a lifestyle decision. Make it on purpose.
Wool: warm, bouncy, forgiving
Wool fibers have natural crimp, which traps air. That’s why wool is warm without being heavy, and why it bounces back from wrinkles instead of holding onto them. It drapes with some body, so it looks structured without being stiff.
The catch is texture. Finer wools like merino feel soft against skin. Coarser wools can itch, especially at the neck and wrists. Wool also pills, mostly in high-friction zones like underarms and where a bag strap sits. That’s normal and fixable with a fabric shaver. A good wool piece pills lightly at first, then settles down.
Cotton: easy, breathable, depends on the weave
Cotton is the everyday fiber. It breathes, it’s comfortable, and it washes well. How it behaves depends on the yarn and the weave. Tightly woven poplin holds a crisp line. A loose jersey slouches. Longer fibers, often labeled things like Pima or Supima, make smoother, stronger yarn that resists pilling better than short-fiber cotton.
Cotton wrinkles, though less dramatically than linen. It can also shrink and fade over time. Pre-washed or garment-dyed cotton has already done some of that for you.
Linen: the wrinkle is the point
Linen is cool, dry, and a little crisp. It gets softer every time you wash it, and it wrinkles almost on contact. If you want a pressed look, linen will fight you. If you like a lived-in, slightly undone vibe, it’s perfect.
Pure linen can feel stiff when new, and a loose weave can be see-through in light colors. A linen-cotton blend is a good middle ground: you keep the airy hand with fewer creases and a softer start.
Viscose: beautiful drape, needs a little respect
Viscose, which US labels often list as rayon, is made from plant cellulose. It’s the reason a slip skirt moves like liquid. It’s smooth, lightweight, and comfortable in heat.
It’s also weaker when wet. Aggressive washing can stretch it, warp it, or shrink it. It wrinkles easily too, and it can lose shape at the elbows and seat if it’s cut too fine. Modal and lyocell are relatives with similar softness and, generally, better wash behavior. For viscose, follow the care tag exactly.
Blends: read the job each fiber is doing
Blends aren’t automatically a downgrade. They’re fibers with assigned roles.
- Elastane or spandex (a small amount): adds stretch and recovery, so knees and seats don’t bag out.
- Nylon: adds strength, especially in knits that get a lot of wear.
- Polyester: adds wrinkle resistance and shape retention, but it doesn’t breathe like natural fibers, and it can pill and hold odor.
- Wool with synthetics: can add durability, but if wool is a minor share, you won’t get wool’s warmth or feel.
The question to ask: what is each fiber doing here? If you can answer that, the blend is working for you. If one is just there to lower the cost, you’ll feel it by the third wear.
What to check in hand
The tag gets you halfway. Texture finishes the job. When a piece arrives, or when you’re touching it anywhere, run through this before you cut tags:
- Crumple it. Squeeze a corner in your fist for five seconds, then let go. Does it spring back, soften, or stay creased?
- Hold it to the light. You’re checking density. If it’s see-through in a color you planned to wear without layers, you’ll know now.
- Rub it against itself. Fabric on fabric previews pilling. If it fuzzes in a few passes, it will on your arms too.
- Drape it over your hand. Does it fall in soft folds, or stand off like cardboard? That’s the silhouette you’re buying.
- Pull gently at a seam. Gaps or stressed threads mean it won’t make it through a season of real life.
- Check the inside. Clean seams and finished edges tell you how much care went into the rest.
Texture over label
A famous name sewn into the collar means nothing if the fabric underneath pills, sags, or itches. A piece with no recognizable name and a dense, well-finished fabric will look better on the fortieth wear than the hyped one on the fourth.
That’s the whole idea behind how we edit: better fabric, better fit, better mood. Reading the tag is the quickest way to start doing it yourself.
So next time something catches your eye, flip it over before you fall for it. The tag won’t tell you everything, but it will tell you where to look.