JHT NVG Retention LanyardJHT NVG Retention Lanyard The JHT NVG Retention Lanyard was designed as a universal helmet mounted solution to retain positive stability and retention for your night vision devices. The NVG retention lanyard is different from most on the market as it is made of Thermoplastic CURV for rigidity with hook and loop Velcro. This allows the unit to be low profile and functional. The 2 by 3 loop field on top allows the user to mount strobes or additional