These label protectors are designed to be placed over book/circulation labels to keep them from falling off and to protect them from damage during normal use of the item.
Specs:
Usage: Book/Circulation (a bit wider than spine label protectors)
Mil Thickness: 4-mil
Material: Polyolefin
Adhesive: Acid-Free Acrylic
Finish: Matte
Quantity/Roll: 250/Roll
Overall Dimensions: 1-1/2″H x 3-1/4″W