10x13 Poly Mailers set of 100 

10x13 Poly mailers set of 100 Unsurpassed Water & Tear Resistance Superior side seams combined with Heavy Duty polyethylene make these High Quality envelopes highly resistant to water, punctures, and tears Pressure sensitive self seal Easy packing, tamper-evident, and super secure closure Light Weight & Time Saving which translates to lower shipping costs combined with faster shipment preparation. 100% recyclable