Nylon string on poly envelope secures to riveted button to protect against accidental opening. Expands to hold up to 1" of material. Design is side-opening. Envelope will not transfer print from photocopies.

Nylon string on poly envelope secures to riveted button to protect against accidental opening. Expands to hold up to 1" of material. Design is side-opening. Envelope will not transfer print from photocopies.

Poly envelopes offer a lightweight yet durable construction that resists moisture to protect your valuables from the elements. Heat-welded seams make envelopes more durable and long-lasting than traditional paper envelopes... more

PolyZip Envelope features a zip closure that quickly and easily slides open and closed. The unique PolyZip design protects your materials from the elements, forming a dust-resistant and water-resistant seal unmatched by tr... more

Simply slide the innovative zip closure to effortlessly open and gain access or close and protectively seal this envelope. Contents are protected with a dust resistant and water resistant seal unmatched by traditional pape... more

Nylon string on poly envelope secures to riveted button to protect against accidental opening. Design expands to hold up to 1" material. Top-opening poly envelope will not transfer print from photocopies.

PolyZip Envelope features a zip closure that quickly and easily slides open and closed. Ideal for carrying supplies and organizing projects. The unique PolyZip design protects your materials from the elements, forming a du... more

Heavy-duty polypropylene envelope resists tears and repels moisture. String-tie closure secures contents. Top-loading envelope features 1-1/4" gussets, big enough to hold more than 200 sheets of paper. Acid-free envelope o... more

Colorful poly envelope features 1-1/4" gussets that are big enough to hold more than 200 sheets of paper. String-tie closure secures contents. Super durable polypropylene resists tears and repels moisture. Translucent, aci... more

Nylon string on poly envelope secures to riveted button to protect against accidental opening. Design expands to hold up to 1" material. Top-opening poly envelope will not transfer print from photocopies.