Rothco ECWCS Poly Zip Collar ShirtsNeed to stay warm this winter? Whether you're in Minnesota or in Nova Scotia these GI style extreme cold weather tops will definitely keep you warm. Rothco's Polyester Extended Cold Weather Clothing System also know as ECWCS features a 100% polyester with a soft and comfortable fleece lining. For added comfort the underwear features a full cut. Be sure to view the matching bottoms as well. Sorry but Sand is not available in size 3X, but is available in Black or Brown...