Brand new, unused. Adds antibacterial and deodorizing functions to warmth. Pants FIBER HEAT CLEAN Elastic waistband Drawstring included (see 3rd image) Side pockets (see 4th image) Roomy fit, larger than the size suggests Good feel against the skin Fabric on the inside (see last image) Brown color? Not entirely sure. Warm: Uses warm material with excellent heat retention. Antibacterial and Deodorizing: Suppresses bacteria on the fibers and provides deodorizing effects. Deodorizing: Reduces unpleasant odors by the fibers coming into contact with odor components. Anti-static: Processed to reduce static electricity during wear and removal. Light and warm For relaxing time How about for cold everyday life? Purchased last year Stored at home Please refrain from purchasing if you are at all concerned. Please understand that there may be compression and folding wrinkles during shipping. Please refrain from purchasing if you are sensitive to such things.