Middle-aged fitness shoes and sneakers soles flat, plasticity, elastic, for young people to run, jump ship to a certain buffer, so many young people like to wear, but there are many long-wearing ills. Sneakers materials, mostly rubber, plastic, foam, nylon, canvas, etc., ventilation is poor. Sweaty feet long in this "closed" environment, can lead to fungal growth and spread, the occurrence of athlete's foot, dermatitis, eczema and other skin diseases. Middle-aged fitness shoes or sneakers with a non-flat shoes. It can not guarantee even distribution throughout the body center of gravity foot, not the body's muscles, ligaments, bones and spine to maintain the normal position and work status. Teenagers put on the body gravity change after the middle-aged gym shoes or sneakers, foot force appears uneven distribution affects footwork. Middle-aged long-wearing gym shoes, for young people in the developmental stage, not only useless, but also very harmful. Middle-aged middle-aged gym shoes gym shoes, by definition refers to the exercise or competitive sports shoes worn. It can meet the various needs of the people transported guarantor foot to play its essential function in motion. Competitive sports are divided into sports and fitness sports and leisure sports, entertainment and sports. No matter what kind of movement is required to wear a protective effect feet, improve athletic performance shoes. Broadly understood as: kinds of shoes fitness, sports, recreational sports training process and professional sports and race sports are used in older gym shoes. Either broadly or narrowly the elderly fitness shoes, must comply with the requirements of the characteristics of movement. Whether it is fitness or athletic sport shoes are required to meet the requirements of the elderly fitness movement mechanics, biology, ergonomics, kinematics, exercise physiology, hygiene, but also to consider to help athletes improve athletic performance or to create a more good athletic performance. Therefore, middle-aged fitness shoe design and manufacturing process should take full consideration of the characteristics movement, which is different from the middle-aged fitness shoe leather shoes and other footwear logo. http://www.juke123.com/goods-260877/