Its reversible and textured sticky non-slip surface has excellent traction. This PVC mat is free of the phthalates DEHP, DBP, BBP, DINP, DIDP and DNOP.
Promising review: "I'm a yoga instructor and I love Gaiam mats because they're not outrageously expensive, are a good value, and do the job you need them to do. I purchased this in December 2016 and there was NO chemical odor or problem, beyond the initial rubbery scent that dissipated within a few hours. My mat is bright, beautiful, and does everything I need it to do. I don't have a problem with slickness with this mat. However, note that this is a 5mm thickness, slightly squishier than a thinner mat. You will have to grip a little when you're in your poses. If you have a vigorous or sweaty practice, you should be on a thinner mat. Remember, you're doing the yoga, not your mat. So, yes, you do need to activate hands and feet in your poses. I recommend a 5mm thickness as a comfort for older students or anyone with minor joint issues." —zenfarm
Get it from Amazon for $29.97+ (available in 32 patterns) or Jet for $27.98+ (available in 35 patterns).