Medium is a great size because it's often the average, especially when you consider that our selection of medium-sized jackets can be further subdivided by women's, unisex, men's, and kids categories. So if you're a reseller, medium is bound to be a popular choice because it caters to such a wide range of people.
That said, no one knows your clientele like you. So if you're just staring out, we recommend medium-sized jackets to see what your customers like, but if you know or anticipate needing a wide range of sizes, we certainly offer a wide range of jacket sizes (XS to 6XL).