Left 4 Dead Explosive and Incendiary Ammo Bobby Pins.
Acrylic ammo pack charms on silvertone bobby pins (hair clips).
Ammo pack charms are approx 1″ x 0.6″ on 2″ bobby pins (total length is 2.3″)
Acrylic is a tough non-flexible plastic, with a textured finish which is just over 1mm thick.
It is completely flat in appearance, any similarities to a 3D object is only because it has been cleverly shaded that way.
The charms are one sided only, the other side is plain white.
It has been varnished so is waterproof to a certain degree although I would not recommend wearing it whilst swimming or showering.