A unique 3 ply Kiso Hinoki blade, consisting of two thick (almost 2mm) outer plies and a very thick inner core glued perpendicular to the fiber direction of the outer plies. This gives it almost the feeling a single ply blade without the extra thickness required and lower cost.
Acquired this used but in a very very good condition, almost new. I've been playing with Speed 90 for some time now (and It is the best Blade, just to point It) and the Mai gouban is similar to It, with a little less Speed, almost the same control, and It has a tiny bit vibration. Excellent blade.