Which yoga mat is truly non-slip when you have sweaty hands?

If you tend to have sweaty hands, closed-cell mats (like TPE or PVC) are often problematic because sweat forms a film on the surface. The best choice is mats made of open-cell natural rubber or with a PU (polyurethane) coating. These materials absorb moisture in seconds and offer a 'dry grip'. Cork mats are also excellent, as their grip is activated by moisture.