Comfortable Performance Stretch Midweight Polyester Spandex mix with Scent-Factor and Moisture Wicking Technologies to keep you dry and warm while remaining undetected. Performance Stretch Midweight Polyester Spandex Scent-Factor Technology Moisture Wicking Technology Comfortable Flatlock Seaming Pairs with Men's Buck Hill Base Layer Mock Specs 92% Polyester; 8% Spandex Machine wash cold with like colors, Only non-chlorine bleach when needed, Tumble dry low, Remove promptly, Cool iron if needed