Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Would you like to know what it feels like to have your feet in a vise?

These slippers are without a doubt the most uncomfortable things I've ever put my feet into. The concept is good, but the shearling lining is so thick that you would definately want to order the next size larger. That might solve the length discomfort, but there still isn't sufficient heighth comfort. They felt like an all encompassing vise, squeezing my feet so tightly that I had to remove them to gain relief. Very uncomfortable.