Rudolph Design outer surface/Grey inner lining. Rudolph design printed across both the front and back of each bag. USPS APPROVED FEDEX APPROVED UPS APPROVED 50 Mailers Size: 10x13 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! Lower shipping costs combined with faster shipment preparation equal big savings over other packaging option. 100% recyclable!