We have a metal crate and metal x pen. KS doesn't seem to mind them, but she rarely is around them now. I put up her x pen at night to keep her in one place while we sleep. She has a Potty Training Puppy Apartment crate, so she uses her crate as her bathroom. It has a potty pad on one side and a little bed on the other. But now that she is pretty much potty trained, I leave the door open so she can go in and out as she pleases. She sleeps in a nice soft, comfy big girl bed now. All of her other carriers (like for when we go out) are soft. I just had to get one for her first plane trip in March and I got a soft one too. I want her to be comfy.