ADVANTUS Sturdi-Kleer Multi-Use Polypropylene Envelopes with Flaps, 8.5 x 11 Inches, 10/Pack (ANG1464FL-10) Pack of 10 multi-use Sturdi-Kleer Multi-Use polypropylene envelopes with flaps Size is 8.5 x 11 inches each Thumb cut fronts and easy open feature Double weld reinforced seams Frosted, see-through