The walking foot is a moving feed system that holds and moves fabric between the presser foot's upper feed dog and the machines's lower feed dogs to better control difficult fabrics as well as multiple layers of fabric.
Sew at low or medium speed
For low shank front and top loading sewing machines
It works well with materials like lawn, knit, vinyl,or leather.
The walking foot is great for quilting, sewing when matching prints or plaids or fabric drift is an issue