---
product_id: 143520075
title: "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"
brand: "ucgou"
price: "E£ 4393"
currency: EGP
in_stock: true
reviews_count: 13
category: "Ucgou"
url: https://www.desertcart.com.eg/products/143520075-ucgou-poly-mailers-12x15-5-inch-black-100-pack-medium
store_origin: EG
region: Egypt
---

# 12x15.5 inch perfect medium size Strong year-round self-sealing adhesive Waterproof & tear-proof durability 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

**Brand:** ucgou
**Price:** E£ 4393
**Availability:** ✅ In Stock

## Summary

> 📦 Ship Smart, Ship Stylish — Because Your Brand Deserves the Best

## Quick Answers

- **What is this?** 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 by ucgou
- **How much does it cost?** E£ 4393 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/143520075-ucgou-poly-mailers-12x15-5-inch-black-100-pack-medium)

## 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

- • **Boost Brand Credibility:** Premium boutique packaging that delights customers and amplifies your professional image.
- • **Streamline Your Workflow:** Self-sealing design saves time and cuts costs—no extra tape or packaging needed.
- • **All-Weather Seal Security:** Four-season adhesive ensures your packages stay sealed tight rain or shine—no compromises.
- • **Stand Out with Sleek Black:** Elevate your brand with bold, opaque black mailers that protect privacy and catch eyes.
- • **Built to Brave the Elements:** Thick polyethylene construction resists punctures, tears, and water for worry-free shipping.

## Overview

UCGOU Poly Mailers are 12x15.5 inch black, opaque, and crafted from thick, tear-resistant polyethylene. Featuring a strong, weatherproof self-sealing adhesive, these 100-pack medium shipping bags ensure secure, waterproof delivery for clothing and boutique items. Designed for efficiency and brand impact, they combine durability with sleek aesthetics to protect your products and impress your customers.

## Description

desertcart.com : 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 : Office Products

Review: Poly mailers - These are the best poly mailers to use very strong I have all the sizes in black they are worth the purchase. I definitely recommend this product to every seller give them a try you won’t regret it 100% worth it
Review: Excellent Poly Mailers - One of the best Poly Mailers I’ve purchased. Great quality, bag size fits a good amount of products, and overall worth it for the price.

## Features

- Eye Catching Poly Mailers: The size of the bags is 12x15.5 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. It is very suitable to transport for makeup supplies, photos, magazine, books, hoodies, 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 | B07QW44JCV |
| Best Sellers Rank | #5,563 in Office Products ( See Top 100 in Office Products ) #78 in Envelope Mailers |
| Brand | UCGOU |
| Closure | Self-Seal |
| Color | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (7,199) |
| Date First Available | June 8, 2019 |
| Item Weight | 2.97 pounds |
| Manufacturer | UCGOU |
| Manufacturer Part Number | AZ131 |
| Material Type | Plastic |
| Number of Items | 100 |
| Product Dimensions | 15.5 x 12 x 0.5 inches |
| Shape | Rectangular |
| Size | 12x15.5 |

## Product Details

- **Brand:** UCGOU
- **Closure Type:** Self-Seal
- **Color:** Black
- **Material:** Plastic
- **Occasion:** Everyday Mailing

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61x45ohVtdL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Poly mailers
*by P***E on October 31, 2025*

These are the best poly mailers to use very strong I have all the sizes in black they are worth the purchase. I definitely recommend this product to every seller give them a try you won’t regret it 100% worth it

### ⭐⭐⭐⭐⭐ Excellent Poly Mailers
*by O***Z on January 6, 2026*

One of the best Poly Mailers I’ve purchased. Great quality, bag size fits a good amount of products, and overall worth it for the price.

### ⭐⭐⭐⭐⭐ Mailers
*by L***O on January 18, 2026*

Great product, great price.

## Frequently Bought Together

- 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
- 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

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**Shop now:** [https://www.desertcart.com.eg/products/143520075-ucgou-poly-mailers-12x15-5-inch-black-100-pack-medium](https://www.desertcart.com.eg/products/143520075-ucgou-poly-mailers-12x15-5-inch-black-100-pack-medium)

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-02-04*