5ive Star Gear Envelope X-RAY Spray

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Envelope X-RAY Spray turns opaque paper temporarily translucent, allowing the user to view the contents of an envelope without ever opening it. Within 30 seconds after the application, the envelope will return to its original state, leaving absolutely no markings, discoloration, or other indications of use. Each spray can treats several hundred square inches.

Specifications and Features:
5ive Star Gear Envelope X-RAY Spray
Designed to turn opaque paper temporarily translucent
Lasts approximately 30-60 seconds before returning envelope to original condition
Leaves no markings or discoloration
Each can treats several hundred square inches
Warning: not to be used on U.S. mail, except by or with the express permission of the addressee
5oz. Spray can