The Patagonia Men's Flannel Lined Performance Straight Fit Jeans are designed for staying active in cold weather. Made of a midweight 71% organic cotton/29% COOLMAX® T400®polyester mechanical stretch denim, they're dyed with an innovative process to minimize water and energy use, and carbon dioxide emissions compared to conventional dyeing processes. The COOLMAX increases mobility and moisture management for after-work skate sessions. Lined the inside with soft and forgiving 100% organic cotton flannel for warm, soft insulation whenever you're headed outside when most folks are still inside. Cut to sit on the waist with a regular rise and best for lean-to-medium builds, the streamlined fit is neither too loose nor too tight through the seat and thigh, and has a straight-leg opening from knee to ankle. The pants have a zip fly, antique nickel shank button closure, two front pockets with printed twill pocket bags, a coin pocket on the right hip and two rear pockets. Lower portions of the rear pockets are reinforced for durability, and pocket-edge seams are bound for a stronger and cleaner finish. They're Fair Trade Certified™ for sewing, which means the people who made them earned a premium for their labor.