Review count tells a story here: 7,240 verified ratings on 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, versus a Office Products category average of just 3,459 (ASIN B07QW44JCV).
- Brand: UCGOU
- Category: Office Products
- Price: $17.49
- Rating: 4.8★ (7,240)
- ASIN: B07QW44JCV
- Best for: plastic envelopes
- Updated: Jul 25, 2026
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
Perfect For
Market Intelligence
This page monitors search performance for the term “plastic envelopes”. Search intent is commercial investigation: users are actively comparing products before a purchase decision. Sellers ranking here benefit from high consideration-stage traffic.
Product Specifications
- 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
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Reference rates as of Jul 19, 2026, based on Amazon's published 2026 US referral-fee and FBA-fulfillment-fee schedule. Amazon updates fees periodically — verify current rates at Seller Central before making pricing decisions.
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Price & Best Seller Rank History
Squatio's own tracking for this listing, recorded since May 15, 2026. Only dates where a value actually changed are listed.
Price history
▲ 2.9% higher than the oldest price we recorded ($16.99)
| Date | Price |
|---|---|
| Aug 5, 2026 | $17.49 |
| May 15, 2026 | $16.99 |
2 price changes recorded.
Best Seller Rank history
| Date | Rank |
|---|---|
| Aug 5, 2026 | #3,142 |
| May 15, 2026 | #4,750 |
2 rank changes recorded. Lower is better. Amazon reports this rank within Office & School Supplies > Envelopes, Mailers & Shipping Supplies > Mailers > Envelope Mailers.
Last checked Aug 23, 2026 2:25am
Frequently Asked Questions
Common questions about 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 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 is available on Amazon at an approximate price of $17.49. You can also compare prices across other retail platforms. Squatio tracks this listing in real time — sign up to see live pricing history and BSR fluctuations.
Based on 7,240 verified Amazon reviews, 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 has an excellent average rating of 4.8 out of 5 stars. Products with this level of review depth generally indicate reliable real-world performance. Squatio's full analytics dashboard lets you dig into review trends, return rates, and competitor comparisons.
The primary tracked keyword for this listing is “plastic envelopes”. Squatio's keyword intelligence tool surfaces related and long-tail variants, allowing sellers to target lower-competition terms with high buyer intent.
Squatio's research database tracks UCGOU listings and competing products across the entire Office Products category on Amazon. Full access lets you compare BSR rankings, pricing trends, review velocity, and keyword overlap to identify exactly where 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 sits within the competitive landscape.
According to the Amazon listing, 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 includes 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, and 3 additional specification items. See the Product Specifications section above for the full list.
The Amazon Standard Identification Number (ASIN) for this product is B07QW44JCV. You can use this ASIN with Squatio's ASIN Lookup tool to access full sales data, keyword rankings, and competitor pricing history.
Squatio is an Amazon product research platform that tracks pricing trends, Best Seller Rank (BSR), estimated monthly search volume, keyword intent, and competitive data across millions of listings. For products like 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, Squatio gives sellers the intelligence to identify market timing, set competitive prices, and discover keyword gaps before competitors do.
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Search Volume Trends
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Pricing & BSR History
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Keyword & Intent Mapping
Every product in Squatio is tagged with a search intent classification — informational, commercial, or transactional. For 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, this helps you match your listing copy to how shoppers actually search.
Competitor Gap Analysis
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