These exceed my expectations for form, fit, function and quality. I have somewhat wider feet and they fit great. Also I wear an 8 1/2" shoe size and the 8" works fine.
As a woman with wide feet, I bought these men's slippers and they're a great fit. The have good cushioning on the bottom, keep my feet warm (but not too hot), and easily slip on and off (without slipping as I walk). My son kept borrowing mine, so I bought him a pair as well. Love the rubber sole for stepping outside in the mornings to get the newspaper.
This fleece- lined slipper is warm as toast, and the soles are durable for the outside pick-up of the morning paper. However, the product only comes in medium width, so if you have a very wide foot like mine, they'll take some breaking in, even if you compensate by ordering a larger length than you would normally require.