The Prince O3 Hybrid Hornet OS is a large 110" head size, full to moderate swing style tennis racquet. The OS stands for over-sized, although it maintains the same unstrung weight of 10oz shared by it's smaller sibling the O3 Hybrid Hornet MP. A larger sweet spot than that model is available due to the extra surface area, and, it is further extended towards the tip thanks to holes located at the twelve and six o'clock position called 'O Ports'. These holes also reduce weight and improve aerodynamics as well as elongating the sweet spot. Also a Tennis Magazine Editor's Choice Award winner like the MP, the Hybrid Hornet OS offers a similar lightweight balanced frame with more power due to the increased surface area albeit with slightly less control due to it's size. For a few dollars more, the Hybrid Lite OS is basically the same design and size but with an even lighter total weight for more control and comfort.