Safe Shipping with Secure Seal Ensure customers receive items exactly as they expected them Thinking Outside the Box Since 2010 Secure Seal was founded by 2 entrepreneurs with a wealth of experience operating various E-commerce businesses. In our businesses, we ship various items across several channels. Purchasing our supplies through a number of companies, we realized the need for a business that could offer competitive products coupled with high levels of customer support. Paramount to shipping is the arrival of your products in peak condition. That’s why we designed Secure Seal poly mailer envelopes. With your security in mind, these envelopes are designed to be tamper-proof, opaque, flexible and waterproof to provide the best possible protection for your goods. We have helped Thousands of satisfied customers to receive their packages unscathed. Make the switch to Secure Seal to send your next item and upgrade your shipping business. High Performance Adhesive Strip Each mailer is puncture and tamper-proof to prevent your package from being opened prior to arrival. Opaque Packaging The envelopes are designed with a black interior in order to protect customer’s privacy during shipping. Stretchy Polyethylene The durable, flexible design allows you to fit padding to give your items an extra layer of protection when needed. Just add bubble wrap or peanuts for more security during shipping. Lightweight Material This high performance material is designed to safely package your goods without adding extra unnecessary weight to your shipments. Delivering Your Mail in Confidence With a Secure Seal tamper-free envelope, you can ship your package assured that its contents are confidential. Strength in Stretches Our robust tear-resistant material provides maximum puncture protection and stretches. To ship securely even when overstuffed. Weight Saving Efficiency Save money at the post office with these extra-lightweight envelopes. Savings without sacrificing on shipment security. Dry as a Bone Sealed tight, these envelopes offer total water protection in transit. So you can rest assured items will be safe during shipping. Your One-Stop Shipping Shop 4" x 6" Poly Mailer 6" x 9'' Poly Mailer 10" x 13'' Poly Mailer 19" x 24'' Poly Mailer 32" x 32'' Poly Mailer Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.7 out of 5 stars 1,377 4.7 out of 5 stars 1,377 4.7 out of 5 stars 1,377 4.7 out of 5 stars 1,377 4.7 out of 5 stars 1,377 Price $28.53$28.53 $33.52$33.52 $56.61$56.61 $82.92$82.92 $60.21$60.21 Size 4" x 6" 6" x 9' 10" x 13" 19" x 24" 32" x 32" Lightweight ✓ ✓ ✓ ✓ ✓ Strong adhesive strip ✓ ✓ ✓ ✓ ✓ Opaque ✓ ✓ ✓ ✓ ✓ Stretchy ✓ ✓ ✓ ✓ ✓ Tear-resistant ✓ ✓ ✓ ✓ ✓ Waterproof ✓ ✓ ✓ ✓ ✓