These are our mid-weight flame stitch alpaca striped socks and the 1" elastic band is knit at the top of the sock. These socks were designed by Mary Ann Weerts, our founder. A good customer of ours wanted something that looked like a mountain so Mary Ann came up with this design. This is a great trouser or leggings sock for work as this is a mid weight sock. These socks are soft, warm and very comfortable yet lighter weight and not as thick in your shoe or boot.