Choosing the right size mailer box isnt just about fitting the product its about optimizing protection, shipping costs, and customer experience. Heres a simple guide to help you select the perfect size mailer box for any product you sell.
Start by measuring: - Length (L) longest side - Width (W) shorter side - Height (H) from base to top Always use the outermost packaging if your product is already boxed or wrapped.
Add at least: - 510 mm on all sides for buffer space - Space for tissue paper, shreds, or inserts - Consider adding extra height if using kraft wraps or stickers inside This prevents tight fits that damage the box or item.
Oversized boxes: - Increase courier cost due to volumetric weight - Require extra filler (bubble wrap, etc.) - Reduce perceived value if the product looks small inside Tip: Customers love snug packaging it feels custom.
If you're shipping via: - Courier partners avoid cube-shaped boxes that increase volumetric weight - In-person delivery or gifting focus on aesthetics and protection - Subscription model choose standard sizes that fit multiple SKUs
Conclusion: The right-sized mailer box does more than hold your product it protects it, elevates presentation, and cuts costs. With a little planning, you can ensure your packaging is as perfect as whats inside.
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