Denim is very important to me. I was in the process of starting a denim line a little while ago(it's still a goal) and one of the problems my partner and I had was picking all the right details to distinguish us from all the millions of other brands. A lot of brands use various cotton and different textile mills for production. We were looking at Cone Mills, which a lot of US manuafacturers use today. During our research and brainstorming we would always come to this crossroad about the type of denim we wanted to use. I was always a proponent of Japnese Selvedge and here are a few bullets explaining why.
1. Japanese Denim is loomed for a more consistent fabric and creates(typically) a smoother texture than most other denim.
2. Japanese Denim is heaver. Although weight is a preference, the heavier the more sturdy. Also the weight and thickness create more defined creases for the fading process.
3. Japanese Denim goes througha process of Sanforization in which unwashed denim is shrunk. The process ensures that the denim won't shirnk much(espeically raw denim) and it will last lomger.
I've recently purchased a new pair of Japanese Selvedge and I love them. I have to get a few wears before the end of the season. They have a narrow leg opening and are a little longer to give a great slouch look.