--- product_id: 314163532 title: "4x8 Inches Poly Bubble Mailers Self Seal Black Padded Envelopes Waterproof Envelopes Shipping Envelopes Bags Pack of 50" brand: "ucgou" price: "$40.33" currency: USD in_stock: true category: "Ucgou" url: https://www.desertcart.us/products/314163532-4x8-inches-poly-bubble-mailers-self-seal-black-padded-envelopes store_origin: US region: United States of America --- # 4x8 inch compact size Strong year-round adhesive Full bubble cushioning 4x8 Inches Poly Bubble Mailers Self Seal Black Padded Envelopes Waterproof Envelopes Shipping Envelopes Bags Pack of 50 **Brand:** ucgou **Price:** $40.33 **Availability:** ✅ In Stock ## Summary > 📦 Ship Smart, Ship Sleek — Protect & Impress Every Time! ## Quick Answers - **What is this?** 4x8 Inches Poly Bubble Mailers Self Seal Black Padded Envelopes Waterproof Envelopes Shipping Envelopes Bags Pack of 50 by ucgou - **How much does it cost?** $40.33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/314163532-4x8-inches-poly-bubble-mailers-self-seal-black-padded-envelopes) ## 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 - • **All-Weather Seal:** Four-season adhesive ensures your package stays securely sealed rain or shine. - • **Boost Your Brand:** Sleek black mailers elevate your professional image and make your shipments instantly recognizable. - • **Compact & Protective:** Perfect 4x8 inch size with full bubble lining shields your valuables from impact. - • **Durable & Waterproof:** Thick polyethylene construction resists punctures, tears, and moisture for worry-free shipping. - • **Privacy-First Design:** Opaque black exterior with gray inner film keeps contents completely confidential. ## Overview UCGOU’s 4x8 inch black poly bubble mailers combine compact design with robust bubble cushioning and a strong self-seal adhesive that performs in all seasons. Crafted from durable, waterproof polyethylene, these padded envelopes ensure your items stay safe and private during transit. Ideal for small businesses aiming to streamline packaging while enhancing brand presence, this pack of 50 mailers offers a professional, secure, and stylish shipping solution. ## Description UCGOU 4x8" Black Bubble Mailers 50pcsWe UCGOU is the professional manufacturer specializing in producing all sorts of poly mailers and bubble mailers. Sustainable innovation is our unremitting pursuit. Padded Envelopes Protection Lined with bubble, Bubble mailers seal well and the padding is sufficient. The bubble mailer envelopes provid more protection during transit as compared to basic poly mailers and don't add too much bulk, as a result the shipping is so much better than the complicated larger packages. Enhence Company Image and Your BrandTape, wrapping film and corrugated cardboard box......This is too much trouble when you prepare to ship somethings. It's time to say bye to the troublesome!! Come to UCGOU! Send your package in clean, simple but grand style which would help to upgrade your company professional image. Believe us. Bubble mailers with bright and pure color will allow customers to easily identify their orders from your shop when they arrive in their mail. ## Features - Opaque Poly Bubble Mailers: The black bubble mailers outer size is 4x8 inch, while the inner size is 4x7 inch. With full air bubbles, our bubble mailers can protect your value products from damage caused by external impacts. The inner lining is using gray film, even if there is strong light, the items in the bag cannot be seen, which can protect your privacy well - Strong Self Sealing Adhesive: Our padded 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 cards, coin, jewelry, makeup supplies 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 | B06XJ3CVR7 | | Additional Features | Lightweight, Self-Adhesive Closure, Waterproof | | Best Sellers Rank | #2,632 in Office Products ( See Top 100 in Office Products ) #6 in Padded Mailers | | Brand Name | UCGOU | | Closure Type | Self-Seal | | Color | Black | | Customer Reviews | 4.8 4.8 out of 5 stars (18,128) | | Item Dimensions L x W | 20.3L x 10.2W centimeters | | Item Shape | Rectangular | | Manufacturer | UCGOU | | Material Type | Plastic | | Model Name | Bubble Mailer | | Number of Items | 50 | | Occasion | everyday mailing | | Occasion Type | General Use | | Recommended Uses For Product | Face Makeup | | Size | 4x8 inches 50 count | | Style | Modern | | UPC | 602447066931 | | Unit Count | 50 Count | ## Product Details - **Brand:** UCGOU - **Closure type:** Self-Seal - **Colour:** Black - **Material:** Plastic - **Occasion:** everyday mailing ## Images ![4x8 Inches Poly Bubble Mailers Self Seal Black Padded Envelopes Waterproof Envelopes Shipping Envelopes Bags Pack of 50 - Image 1](https://m.media-amazon.com/images/I/713XeYg-djL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Can I put a 6oz jar in this size envelope?** A: I would recommend mailing a jar in a small box. Unfortunately it would not fit properly in this envelope. It would also break due to minimal protection. **Q: Do these qualify to put stamp first class?** A: Yes - these can be used to ship First Class through the USPS as long as the total weight is under 13 ounces. **Q: Could I get a pait of sock in these or do you know the Inside height when its sealed** A: Yes you can. Would work if you even had to fold them. The inside height when sealed is probably 7 inches **Q: What size Avery labels work with this size mailer?** A: 4-3/4X6-3/4- labels. ## Frequently Bought Together - UCGOU Bubble Mailers 4x8 Inch Black 50 Pack Usable Size 4x7 Padded Envelopes Small Business Mailing Package Opaque Self Seal Adhesive Waterproof Boutique Shipping Bags for Jewelry Makeup Supplies #000 - Trading Card Shipping Protectors - Premium Ultra Strong Plastic Inserts - 110 Pack - 3.5'' x 4.5'' - Fuxury Bubble Mailers 6x10" 100 Pack Black Padded Envelopes Usable Size 6x9" Thick Mailing Envelopes Bubble Opaque Padded Mailers Shipping Bags for Mailing Jewelry Makeup Small Business#0 --- ## 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.us/products/314163532-4x8-inches-poly-bubble-mailers-self-seal-black-padded-envelopes](https://www.desertcart.us/products/314163532-4x8-inches-poly-bubble-mailers-self-seal-black-padded-envelopes) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-29*