Why we use 13oz selvedge
Nine ounces is too light, sixteen is impossible in summer. The math behind the weight we chose for the Field Jean — and the wear test that settled it.
By David Crest, co-founder
Denim weight is measured in ounces per square yard, and the number people quote — 13oz, 14oz, 21oz — tells you more about a jean than almost any other single spec. It governs how the jean drapes, how fast it fades, how long it lasts, and whether you can stand to wear it in July. We landed on 13oz for the Field Jean, and we did it the slow way.
The case against light
A 9oz denim feels wonderful in the fitting room. It is soft, it moves, it photographs like a dream. Then you wear it for a year. Lightweight denim abrades at the stress points — the pocket bags, the crotch, the back of the knee — far faster than it should, because there is simply less yarn to wear through. We tested a 9oz make in 2019. It was beautiful for eleven months and a wreck by month fourteen.
The case against heavy
At the other end, a 16oz or 21oz denim is close to indestructible and fades gorgeously. It is also a board for the first three months and a sauna from May to September. We love a heavyweight jean. We are not going to pretend it is the jean you reach for most mornings.
“13oz is the weight that disappears. Heavy enough to last, light enough that you forget you're wearing it by 9am.”
13oz is the compromise that stops feeling like a compromise. It breaks in within a few weeks rather than months, fades with real character along the seams, and survives the kind of wear that destroys a lighter make. The Kaihara mill in Hiroshima weaves ours on shuttle looms, which is where the selvedge edge — that clean self-bound seam you see when you cuff them — comes from.
The wear test
Before we committed, four of us wore prototype 13oz jeans daily for six months with no formal washing, just airing them out. We photographed the fades monthly. The honeycombs behind the knee and the whiskers at the hip came in evenly and early. That settled it. The weight you can forget you're wearing is the weight that earns a place in the rotation.
