Hand-knitted socks. They have no constricting or rough feeling and feel pleasant to the touch. They are also breathable and don't get stuffy easily, so you can wear them throughout the year. A strap with a mini sock knitted from the same yarn is attached. Total length: Approximately 22.5-24.5cm. They are stretchy. (Please refer to the photos) Yarn: OPAL Material: 75% wool, 25% polyamide (nylon) Machine washable in a laundry net. (Turning them inside out before washing helps prevent pilling) *While I knit each item with care, please understand that these are handmade products. Those seeking perfection or who are overly sensitive to imperfections should refrain from purchasing.