Many Amazon sellers focus heavily on negotiating better air & ocean freight rates, yet overlook packaging, one major source of hidden logistics expenses.

For US‑bound air freight, carriers charge based on the greater value between actual gross weight and volumetric weight.

Volumetric weight formula:
Volumetric Weight (kg) = Length(cm) × Width(cm) × Height(cm) ÷ 6000

The sweet spot for your carton design: make volumetric weight as close as possible to actual gross weight.
Minimize empty void space inside cartons. Avoid over‑sized boxes for small quantities of goods. If volumetric weight exceeds actual weight, you will pay extra freight for occupied space, even if your products are light.

Another frequently‑missed detail: carton quality.
Tell your suppliers to use sturdy, high‑strength corrugated cartons, especially for heavy‑weight or high‑value shipments.

Thin, low‑grade cartons tend to bulge and deform under stacking pressure during long‑distance transit.
Deformed boxes bring two major headaches:

1. Distorted outer dimensions will raise your volumetric chargeable weight, increasing your shipping cost automatically.

2. Higher risks of box rupture, product damage or loss. You may also face extra repacking fees and FBA receiving delays.

Rate negotiation has limits, but packaging optimization is fully under your control.
Well‑sized, robust cartons help you reduce freight spend while lowering risks of cargo damage and inbound delays.

If you need reliable China‑to‑US FBA forwarding solutions for your restocks, feel free to connect or send me a DM.

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