Lineco See-Thru Polyester Mounting Strips, Hingeless Mount Artwork to Mats, Sturdy for Prints, Documents, Photos, Paper and More. 4 inches, Pack of 12

I used 2 strips and cut each in half. Brilliant concept - the plastic part doesn’t stick to the postcard, it just holds it in place with the sticky part against the back of the matboard. I didn’t need to reposition them, so not sure how easy the sticky part is to readjust. Either way, though, nothing damages your print (or in my case, back of vintage postcard). These things are fantastic.

Work great! But too visible once I hang the frames art on the wall.

Never used before but super easy to use.

Dead simple to use and does what it says it does: Preserves your artwork in a frame/matte without having any adhesive touching your artwork.I don't know why this isn't the standard for all lightweight artwork when framing...

Perfect way to mount drawings behind mats or other backing for frames. Cuts to size and sticks. Does not harm art work. Excellent

Great for mounting art work and not having to worry about tape residue on my originals. A bit pricey but worth it to save your art work.

Once you get the hang of how to use these, they are a really helpful tool for mounting. Will be using these again.

As desceibed. Needed for picture framing.