Denim Q&A & Glossary
"What's raw?" "Why does selvedge cost more?" —
beginner questions and terminology, in one place.
Start here
Q. What is 'raw denim' (or 'rigid' denim)?
Denim that has not been washed or processed after weaving. Starch keeps it stiff. You wear it in to fade it yourself — that's the whole 'growing your jeans' culture.
→ Raw denim introQ. What is 'selvedge' denim? Why is it more expensive?
Selvedge denim is woven on shuttle looms, which produce a self-finished edge ('selvedge') where the weft turns back. It's a byproduct of the loom — not a fiber or dye method. Slower production and narrower fabric raise the cost.
→ What is selvedge denimQ. Denim vs jeans — what's the difference?
'Denim' is the fabric; 'jeans' is the pants made from it. Denim is defined by three elements: (1) cotton, (2) 3×1 twill weave, (3) indigo-dyed warp only.
→ What is denim — the 3 elementsQ. How should I pick my first raw pair?
If you want to fade, a 12–14oz rigid is easier to wear consistently than a heavy 18oz. Pick the fade character you like (sharp vertical fades vs softer organic gradient) — fabric type drives it.
→ Ring vs OE spinning — fade characterFades & growing the jeans
Q. How do I get nice, sharp fades?
The first months are often spent unwashed to set creases. Activities that flex the knees and hips, a slightly-fitted size, and high-density indigo fabric all push toward higher-contrast fades.
→ [PILLAR] Rigid fade complete guideQ. Atari, whiskers, honeycomb — what's the difference?
'Atari' is the general term for friction-fade. Whiskers are the radial lines at the crotch, honeycombs are the lattice behind the knees, vertical fades are warp-derived stripes, and 'moonlight' is a soft seat-area gradient.
→ Atari — the 4 typesQ. How do whiskers form?
Hip-joint flexion creates radial creases at the crotch. Waist position, sitting habits, and starting size (tension) determine the line count, angle, and contrast. No two pairs are alike.
→ Whiskers formationQ. How do I grow deep honeycombs?
Slightly-fitted size, near-daily wear, starting from raw (not pre-washed), and 14oz+ fabric — those four conditions tend to drive sharp honeycombs. Desk-bound days slow it down; standing/driving speeds it up.
→ Honeycomb — mechanism & 4 conditionsCare & washing
Q. How often should I wash?
Common pattern: minimize washing early to let creases set, then move to roughly monthly or bi-monthly once the fade pattern is established. Going indefinitely unwashed risks fiber fatigue, so balance hygiene/fabric/fade.
→ Washing frequency — the optimumQ. What detergent should I use?
Neutral, fluorescent-brightener-free detergents (delicate-wash type) are safe. Avoid optical brighteners, bleach, and fabric softener — they damage indigo or hurt friction-fade formation.
→ How to choose denim detergentCulture & history
Q. I want the big picture of denim history.
From the 1873 rivet patent through workwear, WWII war model, 1955 James Dean, Easy Rider, to today — denim's meaning has been overwritten many times. The timeline puts it on one page.
→ Denim history timelineQ. Films, novels, music and denim?
We're building out a Culture & Subculture series — Rebel Without a Cause, Easy Rider, Pulp Fiction, Sisterhood of the Traveling Pants, Kerouac, Steinbeck, Murakami, Cobain/grunge and more.
→ Culture & Subculture articlesDenim glossary
- Raw / Rigid denim
- Unwashed, unprocessed denim as it comes off the loom. Stiff with starch.
- Selvedge (red ear / white ear)
- The self-finished edge from shuttle looms. Colored threads mark mill/lot.
- Atari
- General term for friction-fade patterns on denim.
- Whiskers
- Radial fade lines at the crotch/hip area.
- Honeycomb
- Lattice-like fade pattern behind the knees.
- Vertical fade
- Vertical streaks from warp-yarn fade. Often associated with selvedge denim.
- Moonlight (gekkō)
- Soft, area-wide blooming fade on the seat.
- Indigo
- The blue dye of denim. Sits on the fiber surface, leaving the core white.
- Core-white (shin-shiro)
- Yarn cross-section structure: indigo-dyed outside, undyed white core. The root of fade.
- Rope dyeing
- Warp yarns dyed in rope (bundle) form. Tends to produce strong core-white structure.
- Ring spinning
- Classical spinning method. Dense helical yarn structure → high-contrast fade.
- Open-end (OE) spinning
- High-speed, low-cost spinning. Tends toward uniform, gentler fade.
- Yarn count (Ne)
- Yarn thickness unit; higher number = thinner yarn. Denim centers on Ne 7–16.
- Ounce (oz)
- Fabric weight per square yard. 14oz+ is heavy; under 10oz is light.
- One-wash
- Denim sold after a single wash. Starch removed; minimal shrinkage.
- War model
- WWII-era simplified-spec individuals, a collector category.
- Arcuate
- The arched stitch design on hip pockets of Levi's 501 etc.
- Chain stitch
- Looped seam used on hems/inseams. Creates the characteristic 'roping' fade after wear.
- Rivet
- Copper reinforcement at pocket corners — core of the 1873 patent.
- Cinch back
- Adjustable back belt on pre-war 501 etc. Discontinued later.
- Button fly
- Front closure with buttons rather than zipper. Maintained as 501's identity.
- Sanforized
- Shrink-control finish. Rigid/un-sanforized denim shrinks significantly on first wash.
- Slub yarn
- Yarn with intentional thick-thin irregularity. Source of horizontal-fade / organic look.
- Heavy ounce
- Denim 14oz or heavier. Tends to show deeper three-dimensional fades.
- LVC
- Levi's Vintage Clothing — Japan-planned line reproducing each era's 501 etc. with period-accurate detail.
- Shuttle loom
- Old-style low-speed, narrow loom that produces selvedge denim.