If you practice Yoga frequently you may have noticed that at times your sticky mat is a little less than sticky. This is especially true if you work up a sweat practicing one of the more vigorous Yoga styles, such as Power Yoga or Ashtanga. That's when cotton mats come to the rescue. The fabric absorbs moisture, leaving you with a more stable surface. Most cotton mats are also thicker than your average sticky mat, which make them more comfortable for floor postures, especially those where you're on your back, lowering your spine "one vertebra at a time." We especially like the model pictured above, with its waffle-stitch design - even your tenth Downward Facing Dog should feel secure!