My printer made the pattern 5 3/4 inches. I printed it again at 125% zoom and it came out at 7 1/4 inches. That's close enough for me.
I'm going to try this for my knee. I have bursitis in my knee and cannot put any pressure on that spot. So I have to put a pillow or something under that leg just above the knee so that spot touches nothing. I think this would work great!