The series which is issued this time contain three styles that all improve

Nike released three new ruing shoes which is called NIKE FREE RUN+ 3, NIKEFREE 4.0 and NIKE FREE 3.0 V4 in C5 Art District of Beijing that is reported by Sina Sports News on 15 March of nike free run Beijing time. NIKE FREE Technology restores Natural Motion, imitates train with bared feet, strengthens tenacity, flexibility and balance of feet, which make muscle become more strong and healthy. Many technologies and services, for example Excogitation of Dynamic joint, reformation of upper construction, three kind of different flexibility of insole and custom made of NIKE FREE RUN ID are contained in this set of new shoes, and they also give all-aside choices for all hierarchical ruers. Five cutting-edge artists which are invited by Nike utilized the theme of FREE to spread iovation and concept of design and then emerge more lively visual effect by photograph and comic. From the year of 2004 when the first NIKE FREE was bo, ruers were very popular with the series. As for the new product this time, Mark Miner who is the designer for Nike ruing shoes said: we always carefully checked the every part of the design and let the each detail of ruing shoes can develop its actual function. New NIKE FREE series make upper be more light-minded by introducing design of Dynamic joint, imitate experience with bared feet and meanwhile give superexcellent elasticity; Design of unique construction make shoes can operate with the motion of feet when you take exercise. NIKE FREE series are the sole classical product on the nike free run 2 part of the color, stylist and functionality, because they are for natural sports and free ruing.

NIKE SPORT RESEARCH LAB (NSRL) collected key data which from the ruers' train with bared feet and then kmgo on systemic comparing test and study in 2001, and the result showed ruing with bare foot can keep the flexibility of muscle between shank and foot. Birth of NIKE FREE makes train with bared feet become reality. The investigation from Universitaet Zu Koeln of Germany between November 2003 and April 2004 confirmed: NIKE FREE not only can increase scope of activity of ankle, add the strength and flexibility of feet and ankle but also can train muscle of medial shank. The designer make a definition for NIKE FREE with diverse grades according to imitating the dissimilarity of elasticity of bare feet. Ruing without shoes is expressed by 0.0. 10.0 can match with the elasticity of standard track shoes of NIKE ZOOMVOMERO. The series which is issued this time contain three styles that all improve the curved groove design of midsole and let the whole cutting become more delicate and be more unhindered of foot with the power of nature. However the new seamless design of upper provides more lightweight and fitter feeling when you wear shoes.