Available in plain, first Class and air mail Printed borders
100 per case
Description
12" x 16" x 4" White Expandable Tyvek envelopes. Tyvek envelopes provide superior puncture, tear and moisture protection. Constructed from 18 lb. Olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature Self-Seal closure. 50 per case.