SIGH OF RELIEF: Yoga should be for detoxing, not for inhaling more chemicals. So when we found this Eco Sticky mat by Prana, made from 100 percent Thermal Plastic Elastomer, we were intrigued. To sum it up, you’ll no longer be breathing in high levels of mercury while you're in downward dog (contained in some other mats), plus it’s anti-slip. Namaste. GET IT: $44; Online at Athletica.