Introducing the Perfection EGC System (Ergonomic Garment Construction), providing enhanced comfort, mobility, and extended wearlife. EGC System waistband Construction, with heavy duty hidden elastic, expanding 2-4" as necessary. This system has a "Stretch & Support" breath able waistband with mini SnugTex. The superior "Crotch Construction" with a one piece diamond shaped gusset for multi-directional stretch, mobility & extended wearlife, makes these EMT pants the most comfortable work pant you will ever wear. Not only are these pants designed with comfort in mind but they are made from a fabric that redefines fabric performance. This poly/cotton twill blend, enhanced by H2Tech,H2UltraDye & H2Flex from Swift Galey, is amazing. The H2Tech provides superior hydrophobic resistance to water, oil & other liquids on the surface. Inside, it wicks moisture away H2UltraDye provides superior color depth & retention v. conventional or vatdyeing processes. The H2Flex enhance,ss comfort with engineered stretch,forease of motion & shape retention. The pant even features a UV rating of 40!