[wrench]

“NVS maybe. FLIR, not so much.”

FLIR is not new, they worked to minimize it also.

“”The new clothing also has one extra-special advantage: it provides better camouflage in the infra-red wavelengths of light used by most night-vision and light-amplification devices.””

[TADSLOS]

But that doesn't mean that soldiers will be totally invisible in the dark, as it's almost impossible to hide a person's body heat against variable background temperatures outdoors.

Two different things. FLIR imagery displays contrasts in heat/cold. NVS is all about light amplification. So, unless these uniforms have some sort of property to defeat body heat emission, FLIR will still detect the soldiers wearing them.