From The Modern Sewing Co.:
This jacket is the ultimate versatile piece which works well all year round. Make it in everything from wools & wax cottons to unlined versions in heavy linens and cottons.
Construction techniques: Welt pockets, 2-piece sleeve, collar & facing and a full lining.
Fit notes: This is a neat fit with full length sleeves and straight body shape. If you're sewing this piece in wool you might consider a size up to allow for bulky winter layering (optional suggestion, please check the sizing chart before cutting).
Recommended Fabrics: This piece works in a huge range of fabrics, from wools and wax cottons to heavy cottons & linens. You can always leave summer variations of this jacket unlined.
Sizes: UK 6-20