Quality denim weighs 12-14 ounces per square yard. Lightweight denim (under 10oz) wears out quickly, loses shape, fades unevenly. Heft = durability. Pick up the jeans—they should feel substantial, not flimsy. Weight you can feel = quality you can trust.

Selvedge denim has a clean, finished edge (often with colored thread line). Indicates narrow-loom weaving, tighter construction, less fraying. Look inside the leg opening for the telltale edge. Selvedge = craftsmanship. Not essential, but a strong quality signal.

Check pocket corners, fly, belt loops, inseam. Quality jeans have bar tacks (dense stitching rectangles) at every stress point. Prevents tearing where jeans fail first. Reinforcement = longevity. No bar tacks? They won't last.

Turn jeans inside out. Chain-stitch hem looks like rope on inside, creates slight roping effect on outside as denim ages. More durable than standard lockstitch. Chain-stitch = authentic construction. Ages beautifully over years.

Metal rivets at pocket corners should be copper or brass (not painted metal). Real metal oxidizes naturally, won't flake or rust. Check by scratching gently—paint flakes, metal doesn't. Real metal = real quality. Details matter.

Check the label. Quality denim is 100% cotton or maximum 2% stretch. Higher synthetic content = faster breakdown, less shape retention, cheaper feel. Cotton content = durability. Stretch is comfort, but pure cotton lasts longer.

Examine all seams closely. Stitches should be small, tight, perfectly even. No loose threads, skipped stitches, or uneven spacing. Quality control you can see. Stitching = construction quality. Sloppy stitching = sloppy jeans.

Brands offering raw/dry denim (unwashed, untreated) signal serious quality. Raw denim molds to your body, creates unique fading patterns, lasts decades. Raw denim = maximum longevity. Requires patience but rewards with personalized fit.