Why Acid-Free, Archival-Quality matters If acidic products are used to store your fabric, the acid can migrate. This can cause damage and decay to your beautiful stash. The majority of other products people use (like comic book covers) are only acid-free on one side and not made for fabric. This is why it is so very important to use good quality Acid-Free and archival materials for the preservation of your cherished collection. Tired of a cluttered and disorganized fabric stash? Say hello to Mini Bolts! Quality Made acid-free with recycled material and Archival-Quality. Features The Original has 2 built-in clips to secure the fabric to the board and a hang hole. The Fat Quarter features 1 built-in clip to secure the fabric to the board and a hang hole. Shop your own stash Mini Bolts allow easy visibility and quick access to fabrics. It also saves space and maximizes storage. Like your own mini fabric shop! What size do you need? Mini Bolts come in two sizes: 1. The Fat Quarter Size Mini Bolt (4x6) is perfect for fabric pieces under 1 yard. 2. The Original Size Mini Bolt (7" x 11-3/4") is perfect for fabric pieces over 1 - 15 yards. Fits on a standard bookshelf