The V OSTRA V1 OS is an enigma (def - a person or thing that is mysterious, puzzling, or difficult to understand) in that is mysterious, how does it feel so comfort-able? It is puzzling in that no other racquet has been able to give the combination of arm protection and playability and it is difficult to understand just how well the V OSTRA V1 OS plays in the hands of an experienced player, yet still gives great performance to lower level players, also. It is a truly unique performance machine and probably the only oversize tennis racquet with all those attributes. Volkl Vostra V1 OS Tennis Racquet - Unstrung | 4.5 | Christy Sports