Polypropylene is an alternative to polyester strips which can be stiff with sharp edges.
These polypropylene strips are soft, much more drapeable and less likely to damage the open pages.
The strips are clear, inert and can be used for long term display. Simply cut the strips into the desired length, wrap around the pages and secure using Velcro fasteners or archival tape.
Available in 2 widths - 12mm and 25mm.
Comes in 100m rolls.