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

• These colorful envelopes will make your mail 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.

Using these yellow Tyvek envelopes is easy. Just put your mail inside, seal the self - seal closure, and you're ready to send. They're great for important documents as they're much stronger than paper envelopes. When handling, avoid sharp objects as they could potentially damage the envelope. To keep them in good condition, store them in a dry place away from direct sunlight. You don't need any special maintenance, just use them as needed for your mailing needs.