Kaj is a 6-button classic suit waistcoat with a high neck drop, button size-regulators on the back, and paspel pockets on the front.
The fabric comes from Italy and it has a herringbone weave. It is woven with black and white yarns, which create a vivid structure when the garment is dyed. The surface is brushed and the yarn composition is 98% cotton and 2% elastane. That combination gives a very comfortable fabric.