Based on previous reviews, I ordered a Medium even though I am a size 8-8 1/2. The slippers are comfortable but could a little more fur lining on the sole. I like the velcro, as it gives the ability to adjust the width.These slippers are shaped like rectangles and feel like boats on my feet. They are warm and the Velcro is good but the shape is so awkward I can't walk in them. I am very disappointed. I have a narrow foot and thought the adjustable tabs would be just what I need. I have starting putting my shoes on instead of the slippers. Sad for me.I have a pair of these in a women's large, but they were a little big so I ordered a medium. I wear anywhere from an 8 1/2 to nine in women's shoes and was happy with the medium fit. They are wide enough also, I have a D width foot. Very comfy slippers.I was SO disapointed. You sent the men's slipper...not the womens! I had such a hard time figuing out how to return them, I ended up giving them to my husband! Very disapointing!!!!! You should at least make it easier to return items!I like the firm sole that can be worn outside the house. The sheepskin lining wraps around your foot keeping it comfortable and they are adjustable for a perfect fit.These slippers are the best.This is my third pair, I wear them all year long. You can go barefoot or wear your thickest sock by just adjusting the Velcro strap. I will not ever buy any other slipper. They last for years before having to replace them.Have arthritis in my toes and the scuff's don't rub or irritate. Like hard sole and that scuffs are adjustable.Definitely recommend these. Cozy and comfortable.