Eco-conscious and style-conscious tennis players will adore the upgraded Head Pro X Duffle Tennis Bag, which is made from recycled PET bottles, and has a contemporary, urban aesthetic in keeping with the GRAVITY racquet series. Alexander Zverev, who believes "we should all take greater care of the planet", carries this bag, which has space for up to 12 racquets with the CCT+ climate control technology protecting them from high temperatures. It doesn’t look like a traditional tennis racquet bag: the modern, multi-functional design has been updated with changes to the duffle shape. The upgrade also includes improvements to the backpack carry system – helping you to carry the bag in comfort – and a new position for the separate, ventilated shoe compartment which means it’s easier to grip a racquet handle.