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Racing Flats
Racing flats, or simply flats, are lightweight athletic shoes designed for "long distance" track and field, cross country, and most often, road races. They differ from normal training shoes mainly by the lack of a substantial heel to toe drop. Flats weigh less than regular running sneakers. In 2014 some racing flats weighed as little as as companies competed to generate the lightest racing flat. Construction Racing flats have only small or no heel lift, and little padding or support. The heel lift of flats ranges from 4mm to 10mm which is closer to the heel lift seen in trainers. They allow a prepared athlete to use their natural foot strength, elasticity, and proprioception to run quickly. A typical flat consists of a nearly flat sole, and a minimal upper to hold it onto the foot. Frequently the thin insole is glued in place to reduce movement and weight. The sole is constructed of two materials: an engineered lightweight foam upper sole attached to a hard rubber base. The uppe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Athletic Shoes
Sneakers (also called trainers, athletic shoes, tennis shoes, gym shoes, kicks, sport shoes, flats, running shoes, or runners) are shoes primarily designed for sports or other forms of physical exercise, but which are now also widely used for everyday casual wear. Since their popularization by companies such as Converse, Nike and Spalding in the mid 20th century, they have become attire, with variety growing in many global markets exponentially. Like other parts of the global clothing industry, manufacture of shoes is heavily concentrated in Asia with nine in ten shoes produced in that region. Contemporary sneakers are largely made from synthetic materials, and the materials and manufacturing process produce, on average, about of CO2 emissions. Some companies are trying to substitute more sustainable materials in their manufacture. About 90% of shoes end up in landfills at end of life. Names and etymology The shoes have gone by a variety of names, depending on geograph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
