10 x 13 x 2 Expandable White Tyvek Envelopes 100/Case

These expandable white Tyvek envelopes are made from 18 lb. olefin. They're ten times stronger than regular paper envelopes, so they can handle rough handling. They can expand to hold bulky items easily. And they come with a self - seal closure for quick and easy use.

Using these envelopes is a breeze. First, open the self - seal closure. If you have bulky items, the envelope can expand to fit them inside. Just place your item gently and press the self - seal flap firmly to close. As for maintenance, keep them in a dry place away from sharp objects to prevent tears. Be careful not to over - expand them repeatedly as it may affect their strength over time.