Rothco Gen III Silk Weight Bottoms - Men's Extra Large Desert Sand. C.W.C.S. system. These underwear bottoms are highly breathable complete with moisture wicking properties to keep you dry.Anti-microbial and anti-odor protection keep the bottoms fresh by keeping bacteria and bad odors from forming. The silk weight underwear bottoms have an elastic waistband fora comfortable fit as well as an accessfly. Our Gen III Silk Weight Bottoms pair well with the matching Level I Silk Weight Tops and are great for layering with other ECWCS items for extreme warmth in cold climates. ' Specifications for Rothco Gen III Silk Weight Bottoms - Men's: Manufacturer: Rothco Gender: Male Age Group: Adults Application: Active Cold Weather Fabric/Material: 100percent Polyester Apparel Fit: Snug Application: Layering Moisture Wicking: Yes Odor Control/Anti Bacterial: Yes Seasonal/Temperature Use: Cold Weather Package Contents: Rothco Gen III Silk Weight Bottoms - Men's Rothco 63020-205: Gen III Silk Weight Bottoms - Men's Extra Large Desert Sand