Sturdy plastic helpful pockets located inside front and back covers insert pocket on front but not back of binder. Rings are opened by a lever at the bottom of the spine NOT by pulling the rings apart. Note: rings are 3" in diameter but spine is 4" wide so plan accordingly. Nice having a few more fun color options with this than the usual serious "office" colors.
This binder style is expensive but it is well worth it. My daughter gets two years of use out of each of these binders which we have purchasing for the last 4 years.