Each of these envelopes has 3 holes on the bottom spine so it fits perfectly into standard-size, 3-ring binders. Their hook-and-loop closures ensure that they stay closed tightly and can be opened easily. They hold small office supplies like pens, calculators, tape and more. Have an important document to store that you can't put holes in? This envelope keeps it protected and allows it to be kept safely in a binder. Are you trying to keep your work or school supplies more consolidated? Use this variety pack to color categorize your notes and papers so that you can keep them in one place and tell them apart quickly and easily. These envelopes are made of pliable, yet sturdy plastic that will protect your documents from bending, tearing, stains and other damage.Details:Includes teal, lilac and pink envelopes9.5" x 11.5" each6 envelopesPlasticFit letter-size binderContents:2 teal envelopes2 lilac envelopes2 pink envelopes