Mountain Khakis Men 307 Lined Jean - Classic Fit. Observe excellence in denim. More than just a jean, the 307 is a stylish beast made of organic, stretch selvage denim. Which means you care about looking good and feeling good in all the best of ways. The Mountain Khakis lined version trips the stoke meter with a lightweight cozy tricot. Hidden within are Mountain Khakis camo pocket bags and special twill tape on the fly panel, your secrets to be revealed. Heres a secret for you, we named the 307 after the Jackson area code (it is actually the same for the entire state of Wyoming). Special MK red stitch accents throughout. Diamond-shaped action gusset. Body 99% organic cotton/1% Lycra denim, Lining 100% poly tricot. Classic Fit.