How to reduce parcel size without risking the product

Shipping charges can depend on how big the parcel is, so shrinking it is one of the few cost savings that does not need a negotiation. The trick is to shrink the empty space, never the protection.

Find where the air is

Take a packed parcel and open it. How much of the volume is the product and how much is filler or empty space? Many sellers are surprised. A small item floating in a large box is common because it was the box that was available, not the box that fitted.

List your top five products and look at each one with that question in mind.

Switch to a right-sized box

A box should be a snug home for the product plus a modest layer of cushioning. Measure the product at its widest, add the cushioning you need on each side, and look for a box close to those dimensions.

• Buy a few sizes rather than one large one.
• Keep sample boxes of each size so you can test fit before ordering in bulk.
• If your product is irregular, choose the box by its longest, widest and tallest measurements.

Do not trim a box so tight that the product presses on the wall. Test it with a gentle press.

Pack flat where you can

Products that can lie flat usually make a smaller parcel than those packed upright.

• Fold garments neatly instead of stuffing them.
• Remove removable parts, such as stands or handles, and pack them alongside.
• Use thin flat mailers for items that can safely bend slightly, like fabric or paper goods.

Never flatten something that needs shape, such as a hat or a structured bag, without checking it springs back.

Replace bulky filler with thinner protection

A pile of crumpled paper takes up room. Sometimes a layer of thin foam or a wrap of bubble sheet protects just as well and takes less space. Try both on a real product and use the shake and press tests from how much cushioning does a parcel actually need.

Remove what is not needed

Look for packaging you add out of habit.

• Oversized outer covers over already sturdy boxes.
• Extra boxes inside boxes.
• Large inserts and flyers.

Some of these protect the product, others just make the parcel bigger. Decide which is which.

Keep protection where the risk is

Not all products need the same treatment. Glass and ceramics need padding on every side. A cotton t-shirt does not. Shrink parcels most on robust products, and be more careful on delicate ones. For fragile goods, the cost of replacement is higher than the shipping saving. Read the cost of a damaged-in-transit parcel before cutting corners.

Measure the result

After you change a box, weigh and measure the new parcel and note the numbers. Then look at your next courier bill to see whether the change showed. Our guide to what is volumetric weight in simple words explains why size feeds into charges, and volumetric weight worked example shows how the maths can play out.

I will not tell you how much you will save, because it depends on your courier, route and products. Test your own parcels and see.

Make it a rule

When you add a new product, choose its box from your standard sizes first. Only add a new size if nothing fits. That keeps your packing fast and your parcels lean.