--- product_id: 5462050 title: "100 ct Plastic 9x12 Self-seal Poly Mailers. Tear-proof, Water-resistant and Postage-saving Lightweight Plastic Shipping Envelopes/Bags." brand: "progo" price: "R651" currency: ZAR in_stock: true reviews_count: 8 url: https://www.desertcart.co.za/products/5462050-100-ct-plastic-9x12-self-seal-poly-mailers-tear-proof store_origin: ZA region: South Africa --- # Water-resistant 100 pack Tear-proof 100 ct Plastic 9x12 Self-seal Poly Mailers. Tear-proof, Water-resistant and Postage-saving Lightweight Plastic Shipping Envelopes/Bags. **Brand:** progo **Price:** R651 **Availability:** ✅ In Stock ## Summary > 📬 Ship Smart, Ship Stylish! ## Quick Answers - **What is this?** 100 ct Plastic 9x12 Self-seal Poly Mailers. Tear-proof, Water-resistant and Postage-saving Lightweight Plastic Shipping Envelopes/Bags. by progo - **How much does it cost?** R651 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/5462050-100-ct-plastic-9x12-self-seal-poly-mailers-tear-proof) ## Best For - progo enthusiasts ## Why This Product - Trusted progo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk Convenience:** 100 pieces to keep your shipping game strong and efficient. - • **Effortless Sealing:** Self-seal design saves you time and hassle during packing. - • **Unmatched Durability:** Experience tear-proof and water-resistant protection for your shipments. - • **Lightweight Efficiency:** Postage-saving envelopes that won't weigh down your budget. - • **Professional Aesthetic:** Sleek white outer surface with a sophisticated grey inner lining. ## Overview The Progo 100 ct Plastic 9x12 Self-seal Poly Mailers are designed for the modern professional, offering unmatched water and tear resistance. With a lightweight design and self-sealing feature, these envelopes ensure your packages arrive safely and stylishly, all while saving on postage costs. Perfect for e-commerce businesses looking to streamline their shipping process. ## Description Progo 100 ct Plastic 9x12 Self-seal Poly Mailers. Tear-proof, Water-resistant and Postage-saving Lightweight Plastic Shipping Envelopes/Bags. ## Features - Unsurpassed Water & Tear Resistance, heavy duty polyethylene - White outer surface, grey inner lining - Pressure sensitive self seal - Light Weight & Time Saving - 100 pieces pack ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Progo | | Brand | Progo | | Item Weight | 1.74 pounds | | Product Dimensions | 14.1 x 9.6 x 1.1 inches | | Item model number | PKG-PolyMailer9x12 | | Is Discontinued By Manufacturer | No | | Color | White,Grey | | Closure | Self-Seal | | Shape | Rectangular | | Material Type | Plastic | | Number of Items | 100 | | Size | One Size | | Sheet Size | 9-x-12-inch | | Manufacturer Part Number | PKG-PolyMailer9x12 | ## Images ![100 ct Plastic 9x12 Self-seal Poly Mailers. Tear-proof, Water-resistant and Postage-saving Lightweight Plastic Shipping Envelopes/Bags. - Image 1](https://m.media-amazon.com/images/I/61KNfbw8dNL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Great Envelopes For Saving Money And Protecting Contents *by C***A on Reviewed in the United States on August 8, 2016* The envelopes were exactly what I needed for mailing out heavy manuscripts. It will save on postage, protect the papers because it's plastic, and it won't tear easily at all, just what I wanted. I couldn't be more tickled if I'd swallowed a pink feather duster. Oh-one caveat; be sure that you have Sharpie or similar pens with which to address your envelopes, or, have mailing labels on hand because you can't write with a normal pen on these envelopes. You can buy either right here on Amazon! What a surprise! ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars These Poly Mailers is a fantastic idea. These mailers are exactly the size I ... *by R***E on Reviewed in the United States on March 5, 2015* These Poly Mailers is a fantastic idea. These mailers are exactly the size I need. I haven't used these yet, but I will use them soon. These mailers seem to be much better than other plastic mailers I have used. These mailers seem to be stronger, and not near as likely to tear; and yet they are lighter than the paper mailers of the same size. This will save ne postage costs! Thank you. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars These are lightweight and perfect for shipping *by L***. on Reviewed in the United States on October 27, 2016* These are lightweight and perfect for shipping! I have been going through my closet to sell things on eBay and have not had any issues with these bags. Although I purchased 100, these are thin enough (yet strong) that they are very easy to store. I will definitely purchase these again in the future. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/5462050-100-ct-plastic-9x12-self-seal-poly-mailers-tear-proof](https://www.desertcart.co.za/products/5462050-100-ct-plastic-9x12-self-seal-poly-mailers-tear-proof) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-05-08*