A soft enamel pin depicting the Smilodon - which glows in the dark! For best results, blast the pin under a bright flashlight or desk lamp for the ultimate glow! Each pin comes on its own backer card for display! 1.75 inch wide Soft enamel Backer card Rubber Clutches: Good for hats, clothes, or any time a metal back might irritate your skin. Butterfly Metal Clutches: Good for bags, collars, and pin boards. Locking Clutch: Good for that extra piece of mind that your pin is locked in place! Perfect for places where a pin might take some extra hits in your travels!