Instruct: Classify the given review into positive or negative sentiment.
Query: Nice mat, a little slippery

This mat seems pretty nice... it's think enough that my back doesn't hurt by the end of class like with the thinner mats. I bought one of the cheaper colors (dark lavender), and it's nice, though slightly more pink than I was hoping for. The only complaint I have is with slipperyness... I was sliding out of downward dog, but I'm hoping that will fade with time; I have only used it for one class so far. The smell is not bad. It's a little bit rubbery smelling at first, but I laid it open for one day, and now its unnoticable.