Best shoe ever. The best. already broken in, not too hot, good ventilalation, looks sharper than sharp. I am very happy with this shoe and how it played the first day worn on court. GOt em in mail yesterday and played two sets of dubs at night (67 61) and felt perfect. Hats off to Nike, this 2.3 is really a Hall of Fame shoe. And the color and design is fantastic. Best shoe ever, period end of discussion. No way can Nadal lose the US Open wearing these shoes!