Mailer Envelopes, Material Chipboard, Mailer Type Flat, Closure Style Self Sealing, Color White, Usable WxL 9 in x 11 in, Usable Width 9 in, Usable Length 11 in, Outside WxL 9 in x 11 1/2 in, Outside Width 9 in, Outside Length 11 1/2 in, Material Thickness 0.02 in, Post-Consumer Recyclability 97 Percent, With Tear Strip Yes, Pre-Printed Address Lines No, Package Quantity 100.