My cat suddenly went blind as a result of an antibiotic.  He's used to sleeping on my head and it's been hard for both of us because he's been scared to jump on and off the bed - he won't do it.  I placed these stairs where my nightstand was, and he began going UP them right away.  He's still scared to take the first step down, simply because he can't see what he's doing.  I have no doubt he'll get used to it quickly.  These are EXACTLY what I was looking for, and they're cute and look like they'll be easy to maintain - just tighten every so often.  I'm thrilled!