12 x 15 1/2 White Flat Tyvek Envelopes 100/Case

These envelopes are crafted from 14 lb. olefin, making them ten times stronger than regular paper envelopes. They come with a convenient self - seal closure. You can choose from plain ones or those with First Class printed borders.

These white flat Tyvek envelopes are really easy to use. Just place your items inside, peel the self - seal strip, and press to close. When using, make sure the contents fit well without overstuffing to keep the envelope sealed properly. For storage, keep them in a dry place away from sharp objects to avoid tearing. If they get dirty, you can gently wipe them with a damp cloth. These envelopes are great for sending important documents, as they're much more durable than paper ones.