Designed to rest between your scalp and your tactical helmet, the 5.11 Tactical UnderHelmet Skull Cap provides a warm and comfortable layer of protection for improved performance during operations in cool or cold climates. Four-panel, double-layer jersey-knit fabric is lightweight yet ultra-durable; the addition of spandex offers a compressed fit that remains secure during periods of high activity. Flatlock seams help reduce chafing and allow for easy layering. A 5.11 Scope heat transfer logo at the left side and a 5.11 logo in front lend subtle styling. Polyester/spandex blend. Imported.