Arthur
excellent BJJ mats
These and zebra mats are generally regarded as the best quality BJJ mats out there. I compete in tournaments that mostly use zebra mats and was concerned the tatami hybrid dollamur mats would feel different but I don't appreciate any difference. Mine are framed in by 8mm rubber flooring which holds them in place during full sparring. They are placed directly over concrete, and the landing from a throw is easier on my body than the gracie green mat at my old academy.

