Hehe, first of all, it's not a spring, it's Nike's SHOX technology, which is called air column in Chinese, and it just plays a buffering role. Now he still wears Nike SHOX GOMER with his own logo on it, but not signature shoes. Nike announced that it would not release the shoes in the Carter series. As for which style you said has no spring, it should be PUMA and AND 1 Taiji generation.