These are great. I was skeptical of the fit, and worried they would slip off the back of my foot/heel, and end up wedged in my sneaker, halfway under my foot. Wrong! They do exactly as claimed, and I really like them. Very comfortable. I don't feel or notice the band in the back - and I get blisters on my heels, just thinking about them. I have washed them, and they do seem to shrink - but stretch right back to their original fit. I am buying more. They barely show above my sneakers. Great investment for walkers/runners.