I'm slightly unsure if this is the correct collection - the shop info said it was part of the RK Chambray Union collection, but the RK site doesn't list any stretch fabrics in that collection! Anyway - this is a lightweight stretch indigo chambray that looks like a denim!
Contents: 97% COTTON 3% SPANDEX
Width: 49” wide
Weight: 3.9 oz. per square yard.