Polyfibre Panthera proves that the polyester universe has come a long way. Unlike traditional polyesters which can sometimes be too firm and underpowered, this new generation co-poly is built with impressive comfort and liveliness. Topspin players looking to hit a heavy ball with an explosive bounce will discover loads of spin potential. This is a great option for advanced big hitters in search of more comfort. It should also work well for strong intermediates who are ready to take the leap into a control string.