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Home > Guides > Void fill packing materials

What packing material should fill the empty space in my box?

Use crumpled kraft paper for most boxes, air pillows for light items, and foam or a second box for anything fragile or heavy. The test is simple: close the box and shake it. If anything shifts, add more fill. Note that flat newspaper laid in sheets adds almost no cushioning; it has to be crumpled to work.

MaterialBest forWatch out for
Crumpled kraft paperGeneral use; cheap, recyclable, fills any shapeMust be crumpled tightly; loose sheets do nothing
Air pillowsLight items; fill big voids with little weightPop under heavy items; one puncture deflates the cushion
Packing peanutsOdd shapes; flow around the itemSettle and shift in transit; a mess to unpack; some are not recyclable
Foam sheets or pouchesFragile and high-value itemsCosts more; overkill for sturdy goods
Bubble wrapWrapping the item itself before boxingSmall bubbles for surface protection, large bubbles for cushioning

What is void fill actually for?

Two jobs: stop the item from moving, and absorb the hits the box will take. Movement is the bigger killer. A heavy object sliding two inches and slamming into the box wall breaks itself and the box; an item held dead center can ride out drops that would crack a loose one. Fill the bottom of the box first with a cushion layer, set the wrapped item in the middle with space on all sides, then pack fill tightly around and over it. If you can press the top flaps down and feel the item give, it needs more.

The material choice follows the item. Sturdy, non-breakable goods just need immobilization, and crumpled paper does it cheaply. Light items in big boxes are where air pillows shine, since fill weight drives shipping cost. Fragile items want foam or bubble wrap touching the item itself, not just fill around it, because void fill cushions the box, not the surface.

What are the classic mistakes?

The newspaper mistake is the most common: flat sheets of newspaper tucked around an item look packed but compress to nothing. Crumple it into tight balls or do not bother. The peanut mistake is filling only the top: peanuts settle downward and shift, so the item ends up resting against the box wall by delivery. Shake the box after filling and top it up. The oversized-box mistake is using a box far bigger than the item; you pay to ship air and cushioning, and the item has more room to build momentum. Size the box close to the item, then fill the remaining gap properly.

For anything genuinely fragile, double-box: pack the item snugly in a smaller box, then float that box inside a larger one with fill on all sides. It is the single most effective upgrade in home packing, and it is what shippers of ceramics, glass, and instruments do as standard practice.

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