I do have just a little heel slippage but nothing to worry about or enough to be uncomfortable. I bought them because they were wireless and have a charging case. Got these for my son who travels for work and wanted a comfortable slip-on shoe to ease his feet. Im extremely happy with my purchase and how it turned out, it was exactly what I was looking for! Awesome fit for skinny small feet Even with that can?t wait to wear it! I bought for the PA system. My most recent pair of leather Birkenstocks were literally falling apart and hurt my feet to walk in, so it was definitely time to replace them. Fortunately they have free returns if it doesnt fit right. I like Carole Hochman pjs generally.