Agilite's newest offering is the Mohawk helmet cover, described by it's designer (an IDF veteran) as the "...very latest in helmet-borne head gear." The Mohawk is built of lightweight milspec material to fit the Ops-Core FAST Maritime helmet, FAST Ballistic helmet and FAST Bump helmet but will soon be available for the will be available in ACH/MICH and IDF Light Helmet wearing crowd. The Mohawk's retention system is designed to secure NVG counter-weights, IR devices, cables and other helmet furniture. The mesh design is intended to allow airflow through bump helmet vents.
Aerodynamic, "snag-free sides" along with a snug fit are intended to keep it from flapping about (or off entirely) during helo operations or freefall and to reduce noise signature (particularly when the helmet and attachments are wet).
The Mohawk is not currently rated for Viking horns.
More here: http://www.agilitegear.com/helmet-covers/mohawk-helmet-cover.html