Eco friendly PVC free Yoga mat

I got my Yoga for Scoliosis DVD in the mail last week and viewed it this weekend. They suggest watching it all the way through first before you begin the practice. I learned that I need a few yoga props that I don’t currently own, the most important item being a mat. Yes, I know what you are thinking. This girl has been doing yoga for five years and doesn’t have a mat!? I know, I know, it sounds a little strange but the reality is the type of yoga I practice on a regular basis doesn’t require a mat. Everything is done on and with blankets. So begins my quest for an eco-friendly , PVC free yoga mat. Price matters to me as well so I am looking for a mat whose cost will be easy on my wallet. If anyone has suggestions of sites let me know! I will keep you updated and let you know when I’ve found one.