--- product_id: 734844561 title: "Grey Plastic Strong Mail Post Mailing Postage Poly Bags Self Seal All Sizes" brand: "crystal mailing" price: "HK$23026" currency: HKD in_stock: true reviews_count: 8 category: "Crystal Mailing" url: https://www.desertcart.hk/products/734844561-grey-plastic-strong-mail-post-mailing-postage-poly-bags-self store_origin: HK region: Hong Kong --- # Extremely lightweight for postage savings Tamper-proof hot-melt adhesive seal Multi-layer moisture & puncture resistant Grey Plastic Strong Mail Post Mailing Postage Poly Bags Self Seal All Sizes **Brand:** crystal mailing **Price:** HK$23026 **Availability:** ✅ In Stock ## Summary > 📦 Seal it. Ship it. Secure it. Stand out in every parcel. ## Quick Answers - **What is this?** Grey Plastic Strong Mail Post Mailing Postage Poly Bags Self Seal All Sizes by crystal mailing - **How much does it cost?** HK$23026 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/734844561-grey-plastic-strong-mail-post-mailing-postage-poly-bags-self) ## Best For - crystal mailing enthusiasts ## Why This Product - Trusted crystal mailing brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Opaque Privacy in Style:** Totally non-see-through bags keep your shipments discreet and professional. - • **Save Big on Shipping Costs:** Ultra-lightweight design stretches extensively, slashing your postage expenses. - • **Custom Fit, Color Your Brand:** Available in multiple sizes and trendy colors—White, Blue, Pink, Grey—to match your vibe. - • **Secure Seal, No Sneaky Access:** High-strength hot-melt adhesive ensures tamper-evident closure—once sealed, only a rip reveals the contents. - • **Ultimate Protection, Zero Compromise:** Multi-layer co-extruded film shields your goods from moisture, punctures, and tears. ## Overview Crystal Mailing’s Grey Plastic Strong Mail Post Bags combine advanced multi-layer LDPE film technology with a tamper-proof hot-melt adhesive seal, delivering superior moisture, puncture, and tear resistance. Lightweight yet durable, these opaque poly bags reduce postage costs while ensuring your shipments remain secure and private. Available in multiple sizes and colors, they’re the smart choice for professionals who demand reliability and style in every package. ## Description Available Colours: White, Blue, Pink, Grey and available in all sizes Strong poly postage mailing bags with self adhesive strip, very good quality and good glue will make sure your item arrives without any tears in bag keeping your product safe. Made of very strong, tear resistant LDPE material to ensure your goods are kept safe in transit Postage savings due to extremely lightweight material and stretched extensively Durability, moisture resistant, multi-layer blend of co-extruded film provides optimum protection against moisture, puncture and tear Security, High-strength, Hot-melt adhesive closure provides additional tamper resistance. Strong glue, permanent adhesive, once the bag is sealed, the only way to take out the item inside is to rip off the bag. Mobile screen cover material used on the clear seal to make sure no static electricity occurred, clear peel off WILL NOT stick on your hands. Non sea through at all, totally opaque Review: I appreciate the purchasing options. - As someone who very occasionally sells things online, I really appreciate being able to buy just a few mailing bags at a time, with a choice of sizes. Good quality product, I can’t fault them on any aspect, but again I do only need to use one from rare time to time. Review: Great Quality and Price - Have used these for a while now and will keep buying from this supplier. Great for sendiing off small items I sell on eBay. ## Features - Durability, moisture resistant, multi-layer blend of co-extruded film provides optimum protection against moisture, puncture and tear - Postage savings due to extremely lightweight material and stretched extensively - Made of very strong, tear resistant LDPE material to ensure your goods are kept safe in transit - Available Colours: White, Blue, Pink, Grey and available in all sizes - Security, High-strength, Hot-melt adhesive closure provides additional tamper resistance. Strong glue, permanent adhesive, once the bag is sealed, the only way to take out the item inside is to rip off the bag. Mobile screen cover material used on the clear seal to make sure no static electricity occurred, clear peel off WILL NOT stick on your hands. Non sea through at all, totally opaque ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07F923498 | | Best Sellers Rank | 34,771 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 399 in Box Mailers | | Brand | Crystal Mailing | | Customer Reviews | 4.2 4.2 out of 5 stars (60) | | Date First Available | 5 July 2018 | | Manufacturer | Crystal Mailing | | Size | 21"x24" - 10000 Bags | ## Images ![Grey Plastic Strong Mail Post Mailing Postage Poly Bags Self Seal All Sizes - Image 1](https://m.media-amazon.com/images/I/51JRhkuh1iL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ I appreciate the purchasing options. *by S***N on 1 September 2024* As someone who very occasionally sells things online, I really appreciate being able to buy just a few mailing bags at a time, with a choice of sizes. Good quality product, I can’t fault them on any aspect, but again I do only need to use one from rare time to time. ### ⭐⭐⭐⭐⭐ Great Quality and Price *by K***R on 26 October 2023* Have used these for a while now and will keep buying from this supplier. Great for sendiing off small items I sell on eBay. ### ⭐⭐⭐⭐⭐ Great Value *by A***R on 29 November 2022* Seem strong enough and ideal for keeping items dry. Very Happy --- ## 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.hk/products/734844561-grey-plastic-strong-mail-post-mailing-postage-poly-bags-self](https://www.desertcart.hk/products/734844561-grey-plastic-strong-mail-post-mailing-postage-poly-bags-self) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-05-18*