Red and Green Snowflake Design print outer surface/Red inner lining. 6z9 50 mailers USPS APPROVED FEDEX APPROVED UPS APPROVED 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