I love my unlined Crocs for summer and winter. In the winter I wear them with thick wool ski socks inside the house. I also have a pair of slip-on Fitflops that I wear with socks in winter and without in summer. We have coated cement floors and while they are warm (in-floor heat) and easy to clean, they are murder on my feet and legs.
" I object to violence because when it appears to do good, the good is only temporary; the evil it does is permanent." Mahatma Gandhi
"This is the ultimate weakness of violence: It multiplies evil and violence in the universe. It doesn't solve any problems." Martin Luther King, Jr.