Packaging Knowledge Hub

Resources & Packaging Guides

Expert tips, material comparisons, industry news, and how-to guides to help you choose the right packaging, cut costs, and ship smarter.

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Packaging Tips at a Glance

Answers to the questions we hear most from e-commerce businesses and warehouse managers.

How to Choose the Right Mailer Size

Oversized mailers waste money on postage and materials. Undersized ones damage goods. Here's the simple rule: measure your product's longest dimension and add 2–3 inches for cushioning and the peel-seal flap. Standard sizes (6×10, 8.5×12, 10.5×16) cover 80% of e-commerce SKUs.

Poly vs. Kraft: Which Should You Stock?

Poly mailers are 100% waterproof and cheaper per unit — ideal for apparel, soft goods, and anything that can survive light flex. Kraft mailers signal premium unboxing, are paper-recyclable, and work well for books, accessories, and beauty products. Most operations stock both.

When to Use Mailers vs. Corrugated Boxes

Use bubble mailers for lightweight items under 2 lbs that can tolerate some flex — clothing, documents, small accessories. Switch to corrugated boxes for anything rigid, heavy (2 lbs+), fragile, or that requires dimensional packaging. Boxes cost more but protect better.

Reducing Shipping Costs with Better Packaging

Dimensional weight pricing means oversized packaging costs you even on light items. Switching to the right-size mailer or flat poly bag can cut per-shipment costs by 15–30%. Combine with lightweight stretch film over corrugated where possible to reduce billable weight.

Still have questions about the right packaging?

Our team has helped hundreds of e-commerce brands and warehouses find the right materials at the right price. Just ask.