OT: bubble mailers

Are small bubble mailers with a baseball card (in a top loader) or a coin inside considered a letter or a large envelope?
USPS.gov says...
Letter - maximum thickness 1/4 inch
Large Envelope - minimum thickness 1/4 inch
That really doesn't help, because mine measure right around 1/4 inch.
USPS.gov says...
Letter - maximum thickness 1/4 inch
Large Envelope - minimum thickness 1/4 inch
That really doesn't help, because mine measure right around 1/4 inch.
0
Comments
Wrap a couple paper towels around the cards/cardboard or add some packing peanuts to make sure it's thick.
If somebody at usps gets confused and thinks it's an envelope it might go thru the automation. Your buyer will be unhappy with his newly creased or otherwise damaged card.
Good strong cardboard doesn't weigh all that much more and really helps protect the card during it's trip.
I ship everything between two pieces of cardboard, and that pretty much covers the thickness I need.
Rick