This is a back-filled indigo check shirt woven in Nishiwaki, Hyogo Prefecture, a production area of yarn-dyed shirts famous for Banshuori. The checks are expressed in indigo blue using different dyeing methods: rope dyeing for the darker colors and cheese dyeing for the lighter colors.
Chest pocket is a simple type without a flap.
Three-needle sewing in various parts gives it a tough appearance.
The chest pocket is also biased (diagonally) to create a point of interest.