The blazer, which is a crossbreed of kinds because it is more of official wear than a sports coat, a blazer does not necessarily go with a correlating pair of trousers. Blazers have an untightened fit compared to sport coats. They are also not as well-assembled, most importantly in the shoulder area. For instance, a blazer of the Italian source is known to have a more loosed and more relaxed structure. Also, one common thing about most blazers in the market today is that there are more of those that are of navy blue in color, and most widespread fabrics used include smooth blue fabric made from wool yarn, flannel, and hopsack. Sportcoats, on the contrary, are basically the kind of dress worn by sportspersons.
A sports coat has to always fit loose enough to allow for layering under. This loose fit condition of the sports coat mentioned is what allows one to wear a sweater underneath. The sports coat in purpose has to look rougher when compared to the blazer; therefore, more solid fabrics were used. A sports coat also will most times come with a label that can be closed totally in a bid to protect the chest and neck.