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Yonex Isometric Technology

An update of Yonex’s original “square” head shape featuring varying depths of racquet grommets, placing deeper grooves at the sides and tip of the frame, and more narrow grooves at the 10 and 1 o’clock positions to improve ball pocketing and shot response, resulting in a 7% larger sweet spot over traditional round-headed frames. It also produces a stronger shot response on balls hit higher on the face, just where modern players tend to make contact. Yonex testing shows high off-center hits to have almost the same power level as shots hit in the sweet spot.