KKBESTPACK

KKBESTPACK 100 Pcs 12x15 5 Poly Mailer Envelopes Shipping Bags Self Adhesive Waterproof Bags Black 12 x 15

308+ bought in the past month

$11.65$12.39
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About this item

  • SHIP CONFIDENTLY Poly mailers for clothing and non-fragile items. These sturdy plastic mailing bags protect contents from rain and dirt better than corrugated boxes or paper envelopes.
  • WATERPROOF POLY BAGS help reduce product damage and refunds by protecting items from rain, dust, stains and more. This makes polymail bags ideal for shirts, towels, bedding, paper and wood products.
  • FAST AND EFFICIENT self-sealing poly bags for shipping reduce labor with a 2-step process. Slip your product into the bag and seal it. Bags accept adhesive labels or permanent marker addressing.
  • 3-LAYER EXTRUDED polyethylene film ensures complete discretion. These large poly mailers deter prying eyes from seeing sensitive contents and preserve the surprise when giftables reach your client.
  • CARRIER-APPROVED large shipping bags are 100% recyclable white poly mailers have high-strength seams and 1.5” flaps for over-stuffing.
$11.65
Was $12.39Save $0.74

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Product details

BrandKKBESTPACK
ColorBlack
Closure TypeSelf-Seal
OccasionGraduation
MaterialPolyethylene (PE)

Technical specifications

product_dimensions7 x 12 x 1 inches
item_weight2.64 pounds
manufacturerKKBESTPACK
item_model_numberB125
date_first_availableMay 27, 2020
best_sellers_rank#769 in Office Products ( See Top 100 in Office Products ) #7 in Envelope Mailers

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Customer reviews

4.82,910 ratings

Customers say

Customers find these poly mailers to be of good quality, with strong adhesive seals that work well every time.

★★★★★

Reliable & Durable

ChevinKenDecember 30, 2025

This is the poly mailer brand I always use. They’re strong, waterproof, and the adhesive seals well every time. For some reason, the black ones are better quality than the other colors from this brand, so I always stick with these. Great value and very reliable for shipping. Read more

★★★★★

Great quality

AdrimoreNovember 21, 2025

Perfect size bag, very thick, durable and the seal is very tight. Read more

★★★★★

Zero complaints

CustomerJanuary 17, 2026

Work perfectly. Strong and the glue is stuck for good if it touches. Won’t open. You actually have to be careful not to let it touch too soon. Great stuff! Read more

★★★★★

2nd time purchase! I love these! Plus a little update

MDunNovember 2, 2023

This 2nd purchase, the adhesive tab is not as thick as the first set, a bit of a difference but not bad still like them a lot. The material is also not as shiny as the first time I purchased. A bit dull looking but still I like them a lot. I would want a different colour but the price is amazing for the plain black...........Still a BUY BUY BUY for me. I had purchased these polymailers and only a few left from the first order. They are great! They are not thick but very strong. The colors is true black and the adhesive is amazing. Out of the 100 pack not 1 was a problem. When you peel off the adhesive that's it, no turning back. Never had an issue with any holes or tearing. Great product. The second order which I have, it came packaged not so nicely but if the quality is the same there is no complaints. I will update, on the second pack. I've ready counted the second pack, yes I'm that person. I would like other colors but because I trust the quality of the black and the price was amazing. BUY BUY BUY! Read more

★★★★★

⭐⭐⭐⭐⭐ 5 Stars – My Go-To Mailers! Strong, Reliable, and Sleek

CustomerAugust 2, 2025

These 12 x 15 black poly mailers have become my absolute go-to for shipping. I’ve used a lot of different mailers over time, but these stand out for all the right reasons. They’re nice and strong — the plastic feels durable, not thin or flimsy like some others I’ve tried. I’ve never had one rip or tear, even when packing bulkier clothing or odd-shaped items. The adhesive strip seals securely, and I feel confident shipping with these knowing they’ll hold up in transit. The black color also gives my packages a clean, professional look — great for branding and a step above standard white or gray mailers. I’ve reordered these and will continue to. Highly recommend for anyone needing dependable, high-quality shipping bags. Read more

Review image 1
★★★★☆

Good Quality, Reasonable Price.

Honest ReviewMarch 13, 2023

I recently purchased KKBESTPACK 100 Pcs 12x15.5 Poly Mailer Envelopes Shipping Bags Self Adhesive Waterproof Bags in Black, and I have to say, I'm quite impressed with the quality of these bags. Firstly, the self-adhesive feature of these bags made the packaging process so much easier and hassle-free. The bags are also waterproof, which ensured that my products remained safe and secure throughout the shipping process. The bags are quite spacious, and I could easily fit in all of my products without any difficulty. The black color of the bags looks very professional, which adds to the overall presentation of the package. The only reason I'm giving this product 4 stars is that I found the bags to be slightly thinner than what I was expecting. However, this didn't compromise the quality of the product in any way. Overall, I would highly recommend these Envelopes Shipping Bags. Read more

★★★★★

Great for Shipping!

Johee AhmedOctober 10, 2025

These poly mailers are strong, lightweight, and perfect for shipping clothes and small items. The adhesive seal sticks really well, and the material doesn’t tear easily. I’ve used several already and everything arrived safely. Definitely a good value for the price! Read more

★★★★★

Great quality

KristinDecember 25, 2025

Very sturdy and reliable! I use these daily to ship items and I have not had any issues. The quality is very good especially for the price. Packaging was great and I will buy from this seller again. The product seals amazing! Read more

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