Columbian CO806 10x13-Inch Tyvek First Class Mail White Envelopes， 100 Count<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Envelope designed for ultimate protection. Protect what's inside. Superior moisture， burst and tear resistant protection. </span></li><li><span class="a-list-item"> Convenient and secure self-sealing Grip-Seal closure. Simply peel off release strip and press down for a quick， secure seal. </span></li><li><span class="a-list-item"> First Class border ensures priority attention. Lightweight white Tyvek material. Open end closure. </span></li><li><span class="a-list-item"> 10" x 13" </span></li><li><span class="a-list-item"> 100 envelopes </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ZzcYCXeUL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41o4cC9V7bL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4166f6Jc8aL.jpg" noproxy>