Are Poly Mailers Waterproof?

When buyers ask us whether poly mailers are waterproof, they are usually not asking about the film alone. What they really want to know is whether the products inside will stay dry when the package encounters rain, wet loading areas or rough transportation.That is a very reasonable question. A poly mailer may look simple, but […]
How Many Poly Mailer Sizes Do You Need?
If your store sells twelve products, do you need twelve different poly mailer sizes? Usually, no. Products with similar packed dimensions can often share the same mailer, so the number of bag sizes you need is normally much smaller than the number of SKUs you sell. However, putting every product into one large bag is […]
Custom Poly Mailer MOQ: Pricing, Samples & Lead Time
The first question buyers usually ask us is simple: “What is your MOQ?” Our answer is just as straightforward: RHK’s minimum order quantity for custom poly mailers is 100 pieces. But “100 pieces” is rarely the whole question. What you probably want to know is whether 100 pieces are right for your project, how the […]
Poly Mailer Materials, Thickness, Weight and Durability Guide

Poly mailer durability depends on the complete film and bag construction, not on thickness alone.Two poly mailers can have the same dimensions and the same stated thickness but perform differently after a product is packed inside. One may stretch smoothly around the contents, while another develops white stress marks. One side seal may remain stable, […]
Poly Mailers: Materials, Sizes and Common Uses

Poly mailers may look like one of the simplest forms of shipping packaging. Choose a bag, place the product inside, remove the adhesive liner, and seal the flap. In practice, however, selecting a suitable mailer involves more than finding one that appears large enough.The material affects the feel, appearance, opacity, printing surface, and disposal considerations […]
Custom Printed Poly Mailers: Logo, Artwork & Printing Guide

A custom printed poly mailer involves more than placing a logo on a standard shipping bag. The material, size, thickness, bag color, printing method, artwork coverage, adhesive closure, and order quantity can all affect its appearance, performance, price, and production requirements.For ecommerce brands, retailers, fulfillment companies, distributors, and logistics businesses, a printed mailer can protect […]
Mailing Bags for Documents, Photos, Books and Specialty Items

Documents, photos, books, and specialty printed items need different levels of protection during shipping.At first glance, documents, photo prints, books, and certificates may seem easy to ship. They are flat, lightweight, and often fit into a standard mailing bag. But the real challenge is not whether the item fits inside the bag. The challenge is […]
courier-bag-size-guide
Are you struggling to decide which courier bag size to order for your clothing products?A bag that looks suitable on a supplier’s size chart may be difficult to load once the garment is folded, placed inside an inner bag and prepared for shipping. Another bag may fit easily but leave too much unused space, making […]
shipping-with-poly-mailers

Can you place a product in a poly mailer, close the flap, add a label, and send it? Technically, yes. But a bag that is too large can let the contents shift, a contaminated adhesive strip can open in transit, and a label wrapped over an edge can become difficult to scan.Shipping with poly mailers […]
top 10 recyclable mailing bags manufacture

Finding a supplier for recycled mailing bags is relatively easy. Finding a factory that can meet your requirements for recycled-content percentage, bag size, film thickness, printing, sealing method, quality documentation, order quantity, and delivery schedule requires a more structured sourcing process.For B2B buyers, a “recycled poly mailer” is not a complete product specification. One supplier […]