Vamp: hollow out engineering mesh vamp, with many hollow holes to increase air permeability. After running in the rain for several times, the vamp belongs to the kind that is easier to take care of.Tongue: Engineering mesh material. The middle should be filled with sponge. Compared with the single-layer thin upper of racing shoes, it has a certain thickness, and the instep feels soft and comfortable.Shoe mouth: the inner side of the shoe mouth and heel are made of soft materials, which significantly improves the comfort of the ankle.Shoe lift: the elongated shoe lift design makes it more convenient to wear shoes quicklyHeel: TPU reinforced structural support is built in the heel, which can well protect the Achilles tendon and ankle stability. There are reflective strips on the back of the heel to increase the safety of night running.Size: 40 40.5 41 42 42.5 43 44 44.5