100% Polyester Imported Slim fit sits close to the body; Stretch fabrication Constructed from highly-breathable, quick-drying polyester French terry fleece for comfort Ribbing on the cuffs and drawcord-adjustable waistband secures the fit Patch-on hand-warmer and back pockets for warmth and storage Products made with bluesign materials are responsibly crafted to limit the impact on the planet; Lifetime warranty Sweats are what grandpa used to call 'em. The men's Burton Oak Fleece Pants aren't just for the gym or dewy tracks at dawn. They're comfy and good wherever, whenever. Except for maybe the opera.