Military Photoluminescent Ranger 'Cat's' Eyes.
This elasticated helmet band is designed to fit snugly around most military helmets.
The 'eyes' are positioned to the rear, enabling stealth follow of the person in front, assuming they're wearing a set too!
Two high quality photoluminescent (wow, what a fab word!) units allow you to see them 'glow' in dark environments.
Unstretched; 60cm approx.