12 x 15 1/2 Black Tyvek Envelopes 100/Case

• These colorful envelopes will make your mailings really stand out.
• Made from 14 lb. olefin material.
• They're ten times stronger than regular paper envelopes.
• Come with a convenient self - seal closure.

These black Tyvek envelopes are great for sending your important mail. To use them, just put your items inside and seal the self - seal closure. Make sure the items fit properly and don't overstuff the envelope to avoid tearing. Since they're much stronger than paper envelopes, you don't have to worry too much about damage during transit. Keep them in a dry place to maintain their quality. Avoid sharp objects that could puncture the envelope. With proper use, these envelopes will serve you well for all your mailing needs.