Binding off or casting off is an essential treatment implemented with the aim of preventing the stitches in the last row from unraveling. It is also the last phase implemented in any kind of knit works especially socks. Every sock should should be finalized with binding off process.
There are various styles of bind off processes you can implement. All of these styles result in different looks. Therefore before deciding on which style to be used for binding off process, you should review samples seen in the picture. Choose one and apply to your knit work socks.