A Yoga Mat Helps You Practice in Comfort
I think anyone who practices Yoga appreciates a good mat. And while a good Yoga mat provides adequate cushioning between your body and the floor, it also defines your practice space - which may not be its intended purpose, but does help some keep their focus. Of course, a yoga mat also helps keep your sweat off the floor and when used in conjunction with a yoga towel - helps keep your workout space drier and more comfortable.
If you find that your towel is constantly slipping on your mat, try some of the new skidless Yoga towels which are super-absorbant and are designed to stay in place on your mat. As for the Yoga mats themselves, most are made of a similar foam material. They come in varying thicknesses, colors and lengths. Find a Yoga mat that's comfortable for you and fits your style, but most of all keep up your practice and discovery!