Mailer Envelopes, Material Paper, Mailer Type Bubble, Closure Style Self Sealing, Color Kraft, Usable WxL 4 in x 7 in, Usable Width 4 in, Usable Length 7 in, Outside WxL 4 in x 8 in, Outside Width 4 in, Outside Length 8 in, Mailer Number #000, Bubble Size 3/16 in, Material Thickness 0.25 in, With Tear Strip No, Pre-Printed Address Lines No, Package Quantity 500