When it comes to protecting your shipments, selecting the right mailer makes a big difference. Two of the most common choices are kraft bubble mailers and poly bubble mailers, each offering unique advantages depending on the nature of your product, brand image, and shipping needs.
In this guide, we’ll compare kraft vs poly bubble mailers, helping you decide which option suits your packaging strategy.
What Are Kraft Bubble Mailers?
Kraft bubble mailers are made from paper (kraft) exteriors lined with protective bubble cushioning on the inside. They're often chosen for their sturdy feel, professional appearance, and eco-conscious appeal. Businesses that ship books, documents, or paper goods appreciate the firm structure and print-friendly surface.
Pros:
Recyclable and biodegradable
Rigid exterior helps resist bending
Natural look aligns with eco-branding
Cons:
Less moisture-resistant
More susceptible to tearing under stress
Can add slightly more weight than poly alternatives
What Are Poly Bubble Mailers?
Poly bubble mailers are made from durable plastic materials with a bubble wrap interior. Lightweight, water-resistant, and highly flexible, they’re widely used across e-commerce for shipping everything from apparel to electronics.
Pros:
Water and tear-resistant
Lightweight and cost-effective
Smoother surface for labels and custom printing
Cons:
Not biodegradable (though many are recyclable)
Not as rigid as kraft, so they may bend easily
If you're looking for a mailer that balances protection and cost efficiency, poly bubble mailers are hard to beat.
For more on handling and sealing tips, see our 6 Poly Bubble Mailer Tips for Secure and Safe Shipping
Which Mailer Is Better for Branding?
If your brand identity leans toward sustainability or a rustic, handmade feel, kraft bags and mailers might better reflect your values. Their textured paper surface works well for custom stamps or eco-friendly stickers.
On the other hand, poly mailers offer excellent surface quality for full-colour printing, allowing more creative freedom for vibrant brand expression. They also hold up better in transit, helping your packaging arrive looking fresh and professional.
Comparing Durability and Weather Resistance
Weather and handling conditions during transit can significantly affect how your packages arrive.
Poly mailers shine in wet or rough environments. Their water-resistant exterior protects against rain, spills, and general wear during shipping.
Kraft mailers, while sturdy, may absorb moisture, warp, or weaken if not handled carefully.
For long-distance or high-volume eCommerce shipping, poly options are generally a more dependable choice.
Weight and Shipping Cost Considerations
The weight of your packaging plays directly into your shipping costs. Here’s where poly bubble mailers take the lead. They’re lighter than Kraft alternatives, which can add up to significant savings across hundreds or thousands of packages.
If your business ships soft goods like clothing or small accessories, switching to poly mailers could reduce both packaging costs and postage fees.
When to Choose Kraft Mailers
Choose Kraft bubble mailers when:
You're shipping books, documents, or rigid paper goods
Your brand focuses on eco-friendly packaging
You want a naturally textured, rustic finish
When to Choose Poly Mailers
Opt for poly bubble mailers if:
Your shipments need water and tear protection
You ship apparel, electronics, or soft items
You're looking to save on weight-based shipping
You need large volumes at a cost-effective rate
Final Thoughts: Which Mailer Works for You?
Both Kraft and poly bubble mailers have their strengths. If appearance and eco-credibility are priorities, Kraft might be right for you. But if durability, lightweight performance, and lower shipping costs are what you need, poly mailers offer unbeatable value.
At ProSupply Global, we specialise in high-quality poly bubble mailers that protect your products and your brand reputation. With various sizes, thicknesses, and finishes available, you’ll find options tailored to your shipping needs.
Ready to Upgrade Your Packaging?
Explore our full collection of poly bubble mailers at ProSupplyGlobal.com and find the right solution to streamline your shipping, protect your products, and delight your customers.