It didn't really fit right with my mat, and it turns out this vendor has a horrible return policy. I would have received $3 back on a $12 order, and I would have had to pay the shipping myself. It also isn't superior quality, and the adjustment does stick. I get frustrated with it here and there, though it does get the job done. It's alright, but I'm not impressed.
Rating: [3 of 5 Stars!]