Are paper padded mailers as protective as bubble mailers?
What independent testing shows, and how to check for your own products
A well-designed paper padded mailer can offer protection comparable to a plastic bubble mailer, depending on the products being shipped and the application. In an independent laboratory test in 2023, WaveBag LIGHT was compared with a plastic bubble mailer for tensile strength, seal strength, penetration load and a ball drop test. The laboratory concluded that the two mailers were comparable in all four tests. As with any packaging change, we recommend testing samples with your own products to verify their suitability for your shipping needs.
Key facts
| Tensile strength | 5.35 vs 5.05 N/mm width · comparable |
|---|---|
| Seal strength | 0.59 vs 0.59 N/mm width · comparable |
| Penetration load | 15 mm probe 32.81 vs 35.53 N; 35 mm probe 47.29 vs 30.21 N · comparable |
| Ball drop on a CD case | Intact at 85 mm, broken at 100 mm, in both mailers · comparable |
| Cushioning | Wave Technology, Offmar's patented corrugated paper cushioning structure (IT 0001423282, EP 2930123) |
| Full results | Lab test: WaveBag LIGHT compared with a plastic bubble mailer |
Why protection is the first question
For e-commerce and logistics teams, packaging only works if products arrive intact. A damaged item means a refund or a replacement, a second shipment and an unhappy customer, so it is natural to ask whether a paper mailer can do the same job as the bubble mailer it replaces.
Protection depends not only on the material itself, but also on how the cushioning is designed, how well the packaging fits the product and the conditions it will face during shipping. Paper can provide effective cushioning when it is engineered to absorb shocks rather than simply used as a flat sheet.
What the independent test found
In May 2023 an independent laboratory tested WaveBag LIGHT and a plastic bubble mailer side by side, using ten samples of each. It measured how much force the envelope material and the seal can take before they tear, how much force is needed to puncture the envelope, and how well each mailer protects a CD case when a steel sphere is dropped onto it.
For every test, the laboratory's conclusion was the same: the two padded envelopes are comparable. In the drop test, for example, the CD case was still intact at 85 mm in both mailers and broke at 100 mm in both, while without a mailer it broke at 50 mm. You can read all the values on the lab test evidence page.
How paper cushioning protects
In WaveBag, the protective layer is made of paper waves engineered to fit into one another. When the mailer is empty the waves interlock and stay compact; when a product is inserted, the structure opens around it to cushion it against shocks and vibration, with roughly 3 mm of cushioning on each side of the item, according to Offmar's space-saving documentation.
This is Wave Technology, Offmar's patented corrugated paper cushioning structure, and it is shared by every WaveBag padded mailer.
Will switching to paper increase damage?
Laboratory results are a useful reference, but your own shipments are the real test. A few practical steps can help reduce the risk when you switch:
- Choose the mailer size that fits the product snugly, without large empty spaces.
- Choose a more rigid format such as WaveBag STRONG for flat items that need additional rigidity, or an expandable format such as WaveBag 3D for bulkier or boxed products.
- Pack your own products in samples and send test parcels on your usual routes.
- Track returns and damage reports for the first weeks after the switch.
The WaveBag team can send samples and technical sheets so you can test before you change. Our guide on switching from bubble mailers to paper covers the rest of the process.
Applies to
Frequently asked questions
Are paper padded mailers as protective as bubble mailers?
Paper padded mailers can offer protection comparable to plastic bubble mailers, depending on their design and the products being shipped. In an independent laboratory comparison conducted in 2023, WaveBag LIGHT and a plastic bubble mailer were found comparable in four tests: tensile strength, seal strength, penetration load and a ball drop test. The findings refer to the products and test conditions examined.
Will switching to paper mailers increase product damage?
Not necessarily. The risk of damage depends on the protective performance of the packaging, the product being shipped and the transport conditions. Independent laboratory testing found WaveBag LIGHT comparable to a plastic bubble mailer in four specific tests. Testing samples with your own products and monitoring actual shipments can help you assess whether switching is suitable for your business.
How is the protection of padded mailers tested?
Laboratories typically measure the tensile strength of the material and the seal, the force needed to puncture the envelope, and impact protection, for example by dropping a weight onto a fragile item packed inside the mailer.
Which WaveBag products were tested?
The 2023 laboratory test covered WaveBag LIGHT, the core padded mailer in the range. Other WaveBag padded mailers use the same patented Wave Technology cushioning, but the results of this specific comparison cannot automatically be extended to the entire product range.
Sources
- Independent laboratory test report, padded envelopes for shipments: WaveBag LIGHT and a plastic bubble mailer, 28 May 2023. Available from the WaveBag team on request.
- Lab test: WaveBag LIGHT compared with a plastic bubble mailer (WaveBag evidence page)
- Offmar S.r.l., “WaveBag: Space-saving protective packaging” (2026). Available from the WaveBag team on request.