Helikon Gen III Level 2 Underwear Set Olive 100% Polyester Military Clothing System - Generation III, Level 2 Long sleeved shirt and drawers Modern textile technology - in accordance with the specification of US Army Comfort Dry: breathable, moisture wicking, quick drying material that stretches for easy movement Material: 95% polyester (grammage: 210/m2), 5% spandex