REGULAR Postcard Sleeve. 3-3/4 x 5-5/8". 4 mil POLYESTER (Mylar). No flap.

Reliable and effective product

it is difficult to insert the card if this card is not very stiff. Do not suited for all types of cards.

Outstanding build and materials

I bought this product after watching the demonstration video about the different types of postcard sleeves. I wanted it to be archival, but stiff like the vinyl ones. I am very pleased with the rigidness of this sleeve and that I can be sure it will protect my Victorian era postcards.

Strong and sturdy build

Excellent design and execution

In my opinion, this is the best postcard sleeve I have found. It is very transparent and archival. It is also more expensive than others in the market. I use these for my best postcards.