Poly Mailers, Material Poly, Mailer Type Bubble, Closure Style Self Sealing, Color White, Usable WxL 3 7/8 in x 6 3/4 in, Usable Width 3 7/8 in, Usable Length 6 3/4 in, Outside WxL 4 in x 8 in, Outside Width 4 in, Outside Length 8 in, Mailer Number #0, Bubble Size 3/16 in, Material Thickness 0.188 in, With Tear Strip No, Pre-Printed Address Lines No, Package Quantity 500