Organize project files, important documents, and keepsakes in standard three-ring binders with SKILCRAFT® Three-Ring Expansion Envelopes made of durable, water- and tear-resistant polypropylene. Three-hole punched envelopes are closed on three sides and expand to 1-1/4" to hold bulky items or more than 200 sheets of paper. Made of acid-free material for archival quality storage, clear envelopes feature a hook and loop closure for secure storage. 3 per package.