#SA 14oz Japanese Sashiko-Indigo Work Shirt (OPSTK)This "basket weave" fabric was originally developed in Japan for Kendo uniforms (Keikogi). The true beauty of this fabric is the texture [ waffle pattern ] and has the high points in the pattern to show wear over the years. The result is a contrasting fade like no other fabric. The super dark indigo will lighten with age. This fabric is not like a woven duck workshirt. It has a knit quality to it but has the ease of movement not like denim or duck