U.S MILITARY ISSUE EXTREME COLD WEATHER GEN III POLARTEC GRID FLEECE THERMAL UNDERWEAR BOTTOMS, POWER DRI MATERIAL IS THE MOST ADVANCED YARN AND FIBER OPTIONS AVAILABLE PROVIDES WARMTH AND MOISTURE WICKING, HELP KEEPS YOU DRI WHEN WET AND STILL REMAIN WARM. WILL NOT MELT AND NO DRIP PERFORMANCE WHEN EXPOSED TO FLAME OR FLASH FIRE. TOP OF THE LINE THERMALS MADE OF 93% POLYESTER 7% SPANDEX. ALL NEW IN BAGS. SIZE IS A XX-LARGE X-LONG, WAIST 44 TO 50 INCHES AND INSEAM 35 INCHES. DUE TO THE MATERIAL HAS SPANDEX IN IT THEY WILL FIT A WAIST 44" TO 50" INCHES AND INSEAM 35" INCHES. MFG BY NEW HORIZONS REHAB SERVICES INC. U.S.A  GUARANTEED ORIGINAL SURPLUS NEW ISSUE 2010.