No need to layer on those puffy, clumsy long undies when cold weather hits. Stay agile AND warm with the unrivaled freedom and bulk-free comfort of DuluthFlex® Fire Hose® Fleece-Lined Work Pants. They're built with all the functional features of our easy-moving originals, with the added insulation of a lightweight-yet-cozy 100% polyester fleece lining bonded to the inside of the pants. That means the plush lining will never shift, bunch up or slow you down like traditional lined pants can. A hidden Crouch Gusset® lets you lunge, climb and crouch without pinching your "private property." Mid-leg utility pockets and back pockets with tuckable flaps let you keep essentials at hand. With a FendOff Finish™ fabric treatment to repel water, stains and jobsite grime.