This holds my belly in, lifts the breast up and helps with posture - it’s tight because it’s supposed to be - I ordered a small and it fit me — but if your my weight and want some wiggle room get a medium . Good stereo separation. As for me, I consider a fitting shoes to be my toes that arent hanging out of shoe and heels that arent hanging out of shoe, and a little bit or toe moving space but I guess that is a personal preference. The only downside is they use plastic grommets to hold the strap that goes around your heel to the shoe. The slippers seem to be well constructed and would be great for whomever had non-X-wide feet. I am using it with a fat tire trail bike. I find it hard to believe that this unknown brand has quality that is almost similar to that of an Apple Airpod. Before you read this, look at my picture of the parts description. Those ear cushions did the job, but the fabric was definitely not as good as the original cushions and the comfort was not up to par as well. I am getting great positive results from daily wearing of the sandals!