If it is hard turf, HG is slightly shorter than FG, and HG is the abbreviation of English hard ground, which means hard ground. \ x0d \ fg: firm groud, (hard grassland) translated into Chinese means: hard ground. Therefore, the football shoes with this suffix are football fields that adapt to the hard natural grass on the ground surface, so the characteristics of football shoes are basically strong spikes and strong grip. \ x0d \ Hg: hard ground translated into Chinese: hard ground. Such football shoes are suitable for playing on hard ground, such as cement ground, hard pure land, gravel ground and other places with poor conditions. Because playing football on such a field will cause considerable wear and tear to the shoes, the leather of this kind of shoes will generally be artificial leather, and the studs are also very different, so the comfort is relatively poor, but the price is naturally relatively cheap. \ x0d \ x0d \ football, of course, is to buy a celebration. "Celebrate the World" football, which is a new football specially designed by Adidas for the final stage of the 20 10 World Cup in South Africa. The background color of the ball is white, and the three circles have the color of 1 1, which pays tribute to football and South Africa. It not only represents the 1 1 players of the football team, but also represents the 1 1 official language and1nation of South Africa. The new game ball has made a historic breakthrough in technology, and its design has incorporated South African elements. Jabranitz used the newly developed Grip'n'Groove spherical surface of Adidas, so that the ball can always maintain a stable flight trajectory under any weather conditions, thus greatly improving the player's control over football. Jia Blanie also made a breakthrough, using only eight outer skins. For the first time, Adidas adopted the method of spherical molding to make each skin realize three-dimensional structure, and then spliced by thermal bonding technology.