--- product_id: 143512762 title: "UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags" brand: "ucgou" price: "€ 141.89" currency: EUR in_stock: true reviews_count: 13 category: "Ucgou" url: https://www.desertcart.be/products/143512762-ucgou-large-poly-mailers-14-5x19-inch-black-100-pack store_origin: BE region: Belgium --- # 14.5x19 inch roomy size All-season strong adhesive Tear-resistant & waterproof UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags **Brand:** ucgou **Price:** € 141.89 **Availability:** ✅ In Stock ## Summary > 📦 Ship Bold, Seal Strong, Stand Apart! ## Quick Answers - **What is this?** UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags by ucgou - **How much does it cost?** € 141.89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/143512762-ucgou-large-poly-mailers-14-5x19-inch-black-100-pack) ## Best For - ucgou enthusiasts ## Why This Product - Trusted ucgou brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seal with Confidence:** Four-season adhesive ensures your packages stay sealed tight from dispatch to delivery. - • **Boost Brand Credibility:** Premium look and feel that impresses customers and enhances your professional image. - • **Built to Brave Any Weather:** Waterproof, tear-proof polyethylene shields your shipments rain or shine. - • **Stand Out with Sleek Black:** Elevate your brand with bold, opaque black mailers that protect privacy and catch eyes. - • **Effortless Packaging Efficiency:** No extra materials needed—save time and cut costs with easy self-seal design. ## Overview UCGOU Large Poly Mailers (14.5x19 inches, 100 pack) combine durable, tear-resistant black polyethylene with a reliable four-season adhesive seal. Designed for professional-grade shipping, these waterproof mailers protect your goods and privacy while enhancing brand presence with a sleek, opaque finish. Ideal for businesses seeking cost-effective, stylish, and secure packaging solutions. ## Description Buy UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags | Self Seal Adhesive Waterproof Tear Proof Mailers Poly Bags Strong Mailing Envelopes Packing for Clothes Books Accessories: Bulk Envelope Mailers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Great Size, Thickness, and Value - These poly mailers are a great size for shipping large purses with plenty of extra room for bubble wrap or other padding. The material feels thick and durable, and I appreciate that they’re water-resistant for added protection during shipping. Since they aren’t padded, I can customize the amount of protection inside and simply fold and tape down any excess if the mailer is larger than needed. Very easy to fold two sizes if it is too big . They are not transparent although I think I saw some that could be if you needed them to be . Very versatile and if they are too big, like I said, I can fold and tape them to size. They are perfect size for some bigger things, but if there is extra room, you can always cut or foldthem and tape them to size The adhesive seals securely, I love the teal color, and around $23 for 50 mailers is a decent value. Review: Reliable repurchase - Strong material with a bit of stretch, not the thin and rippable kind if you know what i mean. I just used up the first pack of the turquoise that i bought about a year ago so i went with black for a change. Quality is consistent between colors. The adhesive is super sticky and strong (all 100 orders made it to their intended recipient in tact). These have gained my trust and i can confidently recommend them to anyone looking for the highest quality at the lowest price ## Features - Eye-Catching Poly Mailers: The size of the bags is 14.5x19 inches. The black is an attractive color that makes your products stand out of standard white poly mailers. With gray inner lining, these poly mailers are opaque. Used tear-resistant material, UCGOU poly mailers can not only protect your privacy well during transportation, but also keep your goods arriving safely - Strong Self Sealing Adhesive: Our mailing envelopes is using four-season adhesive, which can maintain strong stickiness throughout the year, even if the weather is very hot or cold. The strong stickiness prevents your items from being secretly replaced during transportation. The adhesive is covered with silver strip, which are easily peel off the strip and seal the bag - Sturdy and Durable Construction: The thicken shipping bags covers with polyethylene material, making them not easily punctured and damaged. Beside, the shipping bags features with excellent waterproof and tearing proof effects because of the reinforce sealing on the edge. They can keep your value stuff safely to destination even though using on foggy or rainy days - Convenient and Easy to Use: These poly shipping bags are the perfect choice for small and middle business for easily using with not require extra packaging material, which can improve your company productivity at work, save much time and mailing cost. It is very suitable to transport for makeup supplies, magazine, books, hoodies, sweatshirt, shoes, clothes and more - Enhance Brand Influence: Bright colors bring a lively atmosphere, which makes the items you transport more conspicuous and will not be easily lost. Beautiful colors can also make your customers happy and enhance your brand influence. We have been committed to making better products to serve our customers, so that their business can get better and better ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07QZCCKH5 | | Additional Features | Waterproof | | Best Sellers Rank | #962 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Bulk Envelope Mailers | | Brand | UCGOU | | Brand Name | UCGOU | | Closure Type | Self-Seal | | Color | Black | | Customer Reviews | 4.8 out of 5 stars 20,961 Reviews | | Item Dimensions L x W | 19"L x 14.5"W | | Item Shape | Rectangular | | Manufacturer | UCGOU | | Material | Plastic | | Material Type | Plastic | | Number of Items | 100 | | Occasion | Everyday | | Occasion Type | Anytime | | Size | 14.5x19" 100PC | | Style | Poly | | Unit Count | 100 Count | ## Product Details - **Brand:** UCGOU - **Closure Type:** Self-Seal - **Color:** Black - **Material:** Plastic - **Occasion:** Everyday ## Images ![UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags - Image 1](https://m.media-amazon.com/images/I/61x45ohVtdL.jpg) ![UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags - Image 2](https://m.media-amazon.com/images/I/61hRAMDXdEL.jpg) ![UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags - Image 3](https://m.media-amazon.com/images/I/71zLK1bz8vL.jpg) ![UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags - Image 4](https://m.media-amazon.com/images/I/61XbP6skZEL.jpg) ![UCGOU Large Poly Mailers 14.5x19 Inch Black 100 Pack Plastic Shipping Bags - Image 5](https://m.media-amazon.com/images/I/51197+POmvL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Hola quisiera saber cuáles son las medidas ya que en el título dice una y en la imagen y descripción viene Otra, cuál es la correcta ?** A: Hi, the size of this poly mailer is 14.5x19 inches. **Q: Can anyone tell me if these would be good to ship heavy books? What about if I used one to wrap the book and then another to put it in, then ship? Thx** A: As an online seller, I do ship heavy items in these bags, but I double and sometimes triple the bags to ensure they don’t break. Now, I’ve never shipped heavy books, but I’ve slid heavy boxed items in these bags, as I buy various sizes of them, and I’ve shipped heavy bags of clothing weighing almost 20lbs. These bags are pretty sturdy. I think you’d be alright double bagging a heavy book in these. Plus, they look nice. **Q: The price is very attractive, is it easy to tear?** A: I have shipped clothing items and had no complaints about the packaging **Q: Is the a suffocation label on these?** A: No ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Size, Thickness, and Value *by A***R on August 3, 2026* These poly mailers are a great size for shipping large purses with plenty of extra room for bubble wrap or other padding. The material feels thick and durable, and I appreciate that they’re water-resistant for added protection during shipping. Since they aren’t padded, I can customize the amount of protection inside and simply fold and tape down any excess if the mailer is larger than needed. Very easy to fold two sizes if it is too big . They are not transparent although I think I saw some that could be if you needed them to be . Very versatile and if they are too big, like I said, I can fold and tape them to size. They are perfect size for some bigger things, but if there is extra room, you can always cut or foldthem and tape them to size The adhesive seals securely, I love the teal color, and around $23 for 50 mailers is a decent value. ### ⭐⭐⭐⭐⭐ Reliable repurchase *by M***A on June 19, 2026* Strong material with a bit of stretch, not the thin and rippable kind if you know what i mean. I just used up the first pack of the turquoise that i bought about a year ago so i went with black for a change. Quality is consistent between colors. The adhesive is super sticky and strong (all 100 orders made it to their intended recipient in tact). These have gained my trust and i can confidently recommend them to anyone looking for the highest quality at the lowest price ### ⭐⭐⭐⭐⭐ Saves a ton of money shipping bulky shoe boxes! *by K***B on July 31, 2026* These UCGOU Poly Mailers 19x24” are a great size to ship bulky items in including shoe boxes! I was over paying in shipping charges shipping shoes in box’s that just made the item bigger. Switched to the poly Mailers and have saved a ton of money! These are thick and durable too! They stick like superglue and will ship almost any of my larger bulkier items. ## Frequently Bought Together - UCGOU Poly Mailers 14.5x19 Inch Black 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing - UCGOU Poly Mailers 10x13 Inch Black 200 Pack Shipping Bags #4 Strong Mailing Envelopes Boutique Packaging Postal Self Seal Adhesive Waterproof and Tear Proof Small Business for Clothes Books - UCGOU Poly Mailers 12x15.5 Inch Black 100 Pack Medium Shipping Bags #5 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing --- ## 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.be/products/143512762-ucgou-large-poly-mailers-14-5x19-inch-black-100-pack](https://www.desertcart.be/products/143512762-ucgou-large-poly-mailers-14-5x19-inch-black-100-pack) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-09-25*