In this blog post I walk you through the invisible cast-on for toe-up socks with a step-by-step photo tutorial. The invisible cast-on is a type of closed cast-on that can be used on any project that's closed at the bottom, such as pouches, bags, pillow cases, top-down mittens or — what I'm demonstrating in this post — toe-up socks. The invisible cast-on is quick to do, easy to remember, doesn't result in sloppy first rows, and can also be used for TAAT magic loop knitting.