C-Line 33747 Binder Pocket with Hook & Loop Closure, For 8-1/2 x 11" Documents, Pack of 10 Pockets. Super Heavyweight Clear Binder Pockets are made from acid-free, archival quality polypropylene. 1 inch gusset expands for additional capacity of up to 200 sheets. For 11 x 8-1/2" document storage. Fits standard 3-ring binders. Pack of 10 pockets.