Single use, by necessity -[ HMM ] -

99.999% pure, lint-free, ultra-soft wipes for use on lenses, film emulsions, and other surfaces requiring non-abrasive cleaning methods.

 

My usual Wikipedia research came up empty for this product type. If you're curious, here's the manufacturer's product link.

 

The area shown is about 2" x 2" (50.8mm x 50.8mm).

Done