Just slightly thicker than the readily available (and slightly cheaper) brands. I do an exercise class that involves a lot of mat work. This mat is super comfortable for me being 15mm rather than the more common 10mm mats. It’s perfect for my needs. Seems well made too.
Really fantastic cut and fit. They are absolute value for money for what you pay and Get. I now own 5 sets of Yamasaki Gi’s I like them that much. They are my number 1 go to .