Quality Park 9 in. x 12 in. Tyvek Mailer Side Seam, White (100-Box)

Patented release strip makes these open-end catalog envelopes easy to open. Convenient Flap-Stik closure does not require moisture to seal. Envelopes are made of DuPont Tyvek won't rip, tear or puncture. They are much stronger and more secure than traditional paper envelopes. Water-resistant and moisture-resistant envelopes are light-weight to save on postage costs. Envelopes are easy to use. Simply peel and seal.|Patented release strip makes envelopes easy to open|White Tyvek envelope with flap-stik closure|Puncture-resistant, tear-resistant, moisture-resistant and chemical-resistant|100/box