This pattern comes with a C2C grid I designed and is pretty simple, follow the grid, then do a two row repeat until it is the size you want. One size fits most (I'm a 1 to 2xl and i swim in it). If you want to adjust the size just use thicker or thinner yarn and a smaller or larger hook depending how you want to adjust. I made this sweater with one of my favorite songs in mind. I hope you enjoy it as much as I do.