The RQS 22 offers premium performance and power thanks to the Power Isometric head shape that boasts a 20% larger sweet spot than conventional racquets.
Power Isometric Head Shape: Based on the Yonex Isometric theory, evolutionally the Power Isometric was born. By widening the Isometric area, the sweet spot is 20% bigger compared to a regular rounded racquet head. This has allowed Yonex to achieve more power and repulsion than ever before.
Tennis Racket Size Guide. 
