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Features:<ul Style="Margin-Top:0Px; Padding-Top: 5Px; Padding-Bottom: 5Px;"><li>Tyvek&#174; envelopes provide superior puncture, tear and moisture protection</li><li>Constructed from 14 lb. olefin</li><li>Ten times stronger than paper envelopes</li><li>Feature a special seal that once broken, the word "Opened" appears in red on the flap</li></ul>

Tyvek&#153; Tamper Evident Envelopes, 10&quot;W x 13&quot;L, White, 100/Pack

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Tyvek™ Tamper Evident Envelopes, 10"W x 13"L, White, 100/Pack