The men's blazer provides an upscale look which is classic as well as classy for business use and while working in the office. As an add-on to jeans and a nice shirt, a blazer can make any day feel business-casual and show the world that you are a trendy guy who knows his menswear. Fabrics include wool, leather, and silk. The cut of the blazer depends on your style, and the best part about a men's blazer is the range of weights they come in - from light for summer to a very warm winter weight. A men's blazer with a suit is one of the finishing touches of formal attire.