---
product_id: 329218061
title: "UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing"
brand: "ucgou"
price: "¥18064"
currency: JPY
in_stock: true
reviews_count: 13
category: "Ucgou"
url: https://www.desertcart.jp/products/329218061-ucgou-poly-mailers-14-5x19-inch-white-100-pack-large
store_origin: JP
region: Japan
---

# 14.5x19 inch large size Strong self-sealing adhesive Waterproof & tear-proof durability UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing

**Brand:** ucgou
**Price:** ¥18064
**Availability:** ✅ In Stock

## Summary

> 📦 Seal the deal with style and strength — ship smarter, not harder!

## Quick Answers

- **What is this?** UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing by ucgou
- **How much does it cost?** ¥18064 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/329218061-ucgou-poly-mailers-14-5x19-inch-white-100-pack-large)

## 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

- • **Rugged & Reliable:** Thick polyethylene construction resists punctures, tears, and moisture for worry-free delivery.
- • **Effortless Efficiency:** Self-sealing bags save time and eliminate extra packaging—perfect for busy entrepreneurs.
- • **All-Weather Seal Power:** Four-season adhesive ensures your package stays sealed rain or shine, hot or cold.
- • **Brand-Boosting Packaging:** Bright, clean white mailers elevate your brand’s unboxing experience and customer satisfaction.
- • **Privacy-First Opaque Design:** Milky white with gray lining keeps your shipments confidential and secure.

## Overview

UCGOU Poly Mailers are premium 14.5x19 inch opaque white shipping bags designed for professional-grade protection. Featuring tear-resistant polyethylene, waterproof construction, and a robust self-sealing adhesive that performs in all climates, these 100-pack mailers ensure your products arrive safe and secure. Ideal for small to medium businesses, they combine durability with convenience, enhancing brand presence through sleek, privacy-focused packaging.

## Description

Buy UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing: Bulk Envelope Mailers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Sturdy Poly Mailer Bags - Great mailer bags and quality. My 2nd time purchasing these, but this time in black because they were on sale for a reasonable price and had prime shipping, I was disappointed the blue ones were not; didn't make sense. Thickness is pretty good, they're not see through so couldn't see what you're shipping. Adhesive seal is good, but I always go back and tape over seal for extra caution. These are easy to use, flexible, and functional. Love the size of these as well.
Review: Great choice! - I am a repeat customer for these poly bags because they are very strong and the perfect size to ship many of my eBay sales. I love the beautiful, cheerful color!

## Features

- Milky White Poly Mailers: The size of the bags is 14.5x19 inches. These poly mailers are milky white, which differ from the normal 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 | B091GD329C |
| Best Sellers Rank | #1,260 in Office Products ( See Top 100 in Office Products ) #3 in Bulk Envelope Mailers #14 in Envelope Mailers |
| Brand | UCGOU |
| Closure | Self-Seal |
| Color | White |
| Customer Reviews | 4.8 4.8 out of 5 stars (20,707) |
| Date First Available | April 1, 2021 |
| Item Weight | 4.51 pounds |
| Manufacturer | UCGOU |
| Manufacturer Part Number | AZ209 |
| Material Type | Plastic |
| Number of Items | 100 |
| Product Dimensions | 19 x 14.5 x 0.04 inches |
| Shape | Rectangular |
| Size | 14.5x19" 100PC |

## Product Details

- **Brand:** UCGOU
- **Closure Type:** Self-Seal
- **Color:** White
- **Material:** Plastic
- **Occasion:** Everyday Use

## Images

![UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 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/61D0DACge1L.jpg)
![UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing - Image 2](https://m.media-amazon.com/images/I/61NB9sSJ7FS.jpg)
![UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing - Image 3](https://m.media-amazon.com/images/I/61OLW9vjn2L.jpg)
![UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing - Image 4](https://m.media-amazon.com/images/I/61YtA+b184L.jpg)
![UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing - Image 5](https://m.media-amazon.com/images/I/71JPJrhuLOL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sturdy Poly Mailer Bags
*by K***S on November 27, 2025*

Great mailer bags and quality. My 2nd time purchasing these, but this time in black because they were on sale for a reasonable price and had prime shipping, I was disappointed the blue ones were not; didn't make sense. Thickness is pretty good, they're not see through so couldn't see what you're shipping. Adhesive seal is good, but I always go back and tape over seal for extra caution. These are easy to use, flexible, and functional. Love the size of these as well.

### ⭐⭐⭐⭐⭐ Great choice!
*by J***. on October 22, 2025*

I am a repeat customer for these poly bags because they are very strong and the perfect size to ship many of my eBay sales. I love the beautiful, cheerful color!

### ⭐⭐⭐⭐⭐ Great value for quality mailers.
*by R***H on September 11, 2025*

Great value for quality mailers. These are lightweight and thin but seem strong and durable. (Not nearly as thin as some others I have used). They are true to size and fit great for my needs. The self-adhesive closure is easy to use and effective. They are very flexible and easy to fold to fit in your mailbox or tape them up shorter if you need a smaller bag. Great value for the set and a great product.

## Frequently Bought Together

- UCGOU Poly Mailers 14.5x19 Inch White 100 Pack Large Shipping Bags #7 Strong Thick Mailing Envelopes Self Sealing Adhesive Waterproof and Tear Proof Boutique Packaging Postal for Clothing
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- UCGOU Poly Mailers 10x13 Inch White 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.jp/products/329218061-ucgou-poly-mailers-14-5x19-inch-white-100-pack-large](https://www.desertcart.jp/products/329218061-ucgou-poly-mailers-14-5x19-inch-white-100-pack-large)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-11*