This is WONDERFUL! Our little 6lb Yorkie severed his ACL & had to have surgery to fix it.  He never really liked the other stairs we had for him to use to get up on "his" couch.  He goes up and down these without any hesitation.  The softness of them offer a good grip and make him feel confident he isn't going to slip or topple off them.  We will be purchasing a 23" high ramp for our bed if they have one THAT'S how well this works for our little guy.