Extreme Cold Weather Drawers Size medium (31-34) 100% Cotton Off-white/ivory Thermal long underwear Base layer No noticeable wear, very good condition. Get ready for cold weather! These are so thick and soft!! Gear up for the harshest winters with these U.S. Military Extreme Cold Weather Drawers. As part of the military's trusted Extreme Cold Weather Clothing System (ECWCS), these drawers provide superior insulation and durability to handle freezing temperatures. Made from heavyweight 100% cotton, the knitted fabric traps body heat while allowing for breathability, making them an ideal base layer for extreme cold conditions. With an elastic waistband and snug knit cuffs at the ankles, these drawers are designed for both functionality and comfort. Their natural off-white color highlights their utility-driven design, perfect for outdoor enthusiasts, cold-weather workers, or anyone needing reliable thermal gear.