What is Mizuno's technology? I can't read jap, so looking at the site is quite useless except for the pics. What are these suppose to be and do Activekick, BTI, Groove, Carbon80? AF
"GROOVE" refers to the design of racquet frame which is concave in the inner side - the effect is increased size of sweet spot (even larger than Isometric racquet). For others, I also don't understand exactly (I guess "BTi" refers to some of the material they have been used in their racquets).
