Rothco ECWCS Poly Crew Neck Top AR 670-1 Coyote Brown 3XL AR670-1CoyoteBrown-3XL. For added comfort the underwear features a full cut. Be sure to view the matching bottoms as well. Specifications for Rothco ECWCS Poly Crew Neck Top: Manufacturer: Rothco Sleeve Length: Long Age Group: Adults Apparel Fit: Regular Gender: Male Shirt Style: Thermal Shirt Seasonal/Temperature Use: Cold Weather Fabric/Material: 100percent Expedition Weight Polyester Moisture Wicking: Yes Neckline: Crew Lining Material: Fleece Features of Rothco ECWCS Poly Crew Neck Top Material: Polyester Material Specs: 100percent Expedition Weight Polyester Weather: Cold Weather Package Contents: Rothco ECWCS Poly Crew Neck Top Rothco ECWCS Poly Crew Neck Top AR 670-1 Coyote Brown 3XL 3853-AR670-1CoyoteBrown-3XL