This is actually my third one that I have purchased so I can have two in my house and one down in the barn which is my training space. The purple color is awesome and I love it. I use these weekly to work on proprioception with my dogs. I have 2 Icelandic Sheepdogs and a Papillon and they all use this with no issues. The non-nub side is a little slick but that means they have to work harder to keep their feet on it.