Quality Park QUAS3715 10 in. x 13 in. #13 1/2, Cheese Blade Flap, Redi-Strip Closure, Ship-Lite Expansion Mailer - White (100/Box)

Books and bulky catalogs fit perfectly inside Quality Park Ship-Lite Redi-Strip Expansion Envelopes thanks to the expander. It allows for items to be grouped together in a single package, effectively saving on shipping costs. Plus, the self-sealing adhesive is ultra tacky and flexible to tightly seal even the fullest envelopes. As they circulate into the mail system, the water-resistant surface safeguards against wet weather, so when the package arrives, it's still in pristine, professional condition.

Lightweight multi-layer paper construction. Expanding Size - Take advantage of the extra material to stuff the envelopes with everything you need. Peel off the flap to reveal the self-sealing Redi-Strip adhesive, which offers long-lasting hold and dependable stick. Water-resistant material protects contents from rain and snow. Not only does the Ship-Lite construction offer an expandable fit, but it's also reinforced for secure durability.