Crazy!? Who you callin' crazy!?
The colourful ones are canvas, while the taupe ones are a faux-suede. The uppers are soft and will bend and form with your foot.
The sole is made of rubber, but has a light felt layer on top.
For a shoe of this price, they are very comfortable. It's pretty much memory foam. It's very dense with a slow bounce back that remembers the shape of your foot.
Heel height: 0.5"