10 x 13 White Flat Tyvek Envelopes Printed First Class w/ Green Border 100/Case

These envelopes are made from 14 lb. olefin, ten times stronger than paper ones. They feature a self - seal closure and come in plain or First Class printed border options.

These Tyvek envelopes are super easy to use. Just peel the strip on the self - seal closure to open and stick it back to close. They're great for sending important documents as they're much stronger than regular paper envelopes. When using them, make sure not to overstuff as it might affect the seal. To keep them in good condition, store them in a dry place away from sharp objects that could tear the Tyvek material.