Don't fix something that's not broken. That's Lotto's reasoning with the T-Tour IV 600. Making small improvements to the already popular T-Tour 600 line improves the shoe's fit and performance while keeping current fans of the shoe happy. The synthetic leather upper features a slight cosmetic update while still providing a plush, comfortable fit with plenty of support and stability for the avid club player. PuntoFlex technology allows the outsole to move with the natural shape of your foot as it strikes the ground, leaving you totally in control of your court movement. A reinforced toe cap and durable all-court outsole gives you the protection you need to last through your entire tennis season.