It was made from cotton I purchased in Kyoto. I used Simplicity 4134 as the base and then adjusted it by adding a pocket, removing the shoulder seams and adding a quilted lining. The quilted lining method I saw on “Sew a Japanese Winter Hanten Jacket” by Sasa on YouTube at, https://www.youtube.com/watch?v=hwXtR9TBE2Y.