The Head Revolt Pro junior tennis shoes feature an outsole with an all-court profile, making them suitable for all court surfaces. The junior-specific last creates a comfortable fit, enhanced by the cushioning EVA midsole. Good air flow & ventilation for feet is delivered by the breathable tongue, vamp perforation & quarter mesh inserts. Flex grooves in the non-marking outsole improve flexibility, & the 450g (15.9oz) shoes use enhanced rubber to increase their durability.