Little Foot! It's clear plastic (easy to see) and marked all around in bright red. I love mine. Although I don't have a FW, I have one on my 301 and it does a great job, every time. You can probably get it online for about $20, more or less, but I got mine in a local sewing and vac shop. I'm very happy with it. Of course, if you have younger eyes, you may not be so picky.