Santa Clause and his reindeer with the the Aurora Borealis Christmas Design on front and back of Poly Mailers. Bags are made of a thicker material. Original design by Mailers And More. 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 - 100% recyclable