Breeze series, the gimmick selling point is in the upper, the midsole is perforated and 360 breathable. It's light and breathable. Although there is a low hole in the middle, it has good stability. The upper is a three-layer mesh of polyester fiber. Excellent ventilation effect. Nike free's upper has now introduced a dynamic flying line, which has the same effect as a seat belt on a car. It not only makes you feel like running in socks, but also meets the function of fixing your feet. You can't understand that you can imagine the dynamic flying line and feet as a zongzi. Fix your feet when they move to avoid injury. The free midsole is a foamed plastic with secondary heating. This is a patent of Nike a long time ago, which is characterized by good elasticity and toughness, which is also the reason why his sole can be concave to 360. The area where feet touch the ground is larger than that of barefoot, so it is as soft as stepping on the grass. The feeling of approaching barefoot. Nike also added patented brs 1000 carbon glue to reinforce the places where the heel and forefoot of free5 5,0 are easy to wear. Avoid wearing it for a long time. In short, it is a pair of very humanized running shoes. From the perspective of somatosensory wearing comfort, free5.0 is better than the breeze. After all, Adi's low-middle technology completely defeated Nike. However, the upper of free 5.0 is relatively flat, and the fat man with high arch is not suitable for wearing it, because it will be unsociable. Free for people with normal weight, fat people can buy air-cushion shoes. It's not easy to hit by hand, hope to adopt it.