Keep project files, important documents, and keepsakes secure in SKILCRAFT® Side-Loading Translucent Expansion Envelopes made of durable, water- and tear-resistant polypropylene. Envelopes closed on three sides 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 with hook-and-loop closure. 5 per package.