The mat our studio is built around. Natural tree rubber from a cooperative of small growers near Kottayam is calendered into an open-cell surface that drinks a little sweat and grips harder as a practice warms up, over a closed-cell underside that does not creep on tiled or wooden floors. There is no PVC, no TPE and no foam anywhere in it.
Choose 4 mm if you travel or like to feel the floor in standing balances, 6 mm for an everyday practice, and 8 mm if your knees and wrists need cushioning in kneeling and restorative work. Natural rubber has a faint earthy smell for the first week; leave it unrolled in the shade and it fades.