• Custom DuPont™ Tyvek® envelopes • 14 lb. • Tyvek envelopes are strong and durable as they are water and moisture resistant, tear and puncture resistant • Tyvek is eco-friendly as it is 100% recyclable and made from an average of 10% post-industrial content. • Custom imprint available in 1 standard color • Bleeds not available •Available printed on 1 side •10" x 13" open end • Zip Stick® for easy self seal