Fragile products fail in transit for two reasons: they hit something, or they hit each other. An insert solves both by holding each piece in its own space and absorbing what the outer box cannot. Choosing between foam, velvet, suede and flock starts with what the product is made of and how it can mark.
A fitted insert tray cradling a fragile piece, with each cell cut to the product it protects.
Match the insert to the failure mode
Glass and glazed ceramic need clearance more than they need decoration. Foam is the usual answer, because it spreads a knock across a wider area and keeps the piece away from the wall of the box. Cut foam or a moulded tray holds its shape well over repeated packing, which matters if the box will be opened and closed.
Polished and plated parts fail differently. They rarely break; they mark. For those, a soft lining in a close-fitting cell does more than thick foam, because the real danger is movement across the surface rather than a single impact. The insert has to stop the piece travelling in the first place.
Foam, velvet, suede and flock side by side
- Foam: absorbs impact, easy to cut to a profile, best where breakage is the main risk.
- Velvet: a deep soft pile over a shaped tray, chosen where presentation matters alongside protection.
- Suede: a shorter pile that holds a piece snugly without hiding its outline.
- Flock: a bonded fibre surface that keeps small items still with very little bulk.
Many builds combine two of them. A foam core shaped to the product, faced with velvet or suede, gives impact resistance underneath and a fine surface on top. That combination is common for watches, glassware and anything that has both a polished face and a fragile edge to protect.
Designing the cells properly
Cells should be cut from the product itself rather than from a nominal size. We measure the widest point, add clearance for fingers and keep every edge of the product clear of the cell wall by a small, consistent gap. That gap is what stops a piece from rattling when the box is carried.
Anything that can rub needs its own space. Two pieces sharing one cavity will find each other in transit, so a divider between glass and metal parts is worth the extra panel. Where the weight is unevenly distributed, we shift the layout so the box stays balanced when it is lifted from one side.
The insert has to come out again as well. If the box will be reused, or the product will be taken in and out often, we add a lift tab or a shaped finger relief so nobody has to tip the whole box to get a grip. It is a small cut in the tray that protects the lining, the product and the person unpacking it, and it takes no space away from the cells around it.
Approve it with the product inside
We build a sample insert and pack it with your actual products. Turn the box over, carry it, open it and check every surface. This is where you find that one cell is a millimetre tight or that the lid presses on a raised edge, and it is much cheaper to learn that here than after a run has been made.
Choosing inserts and linings for fragile products is an engineering step in the design process rather than a finishing touch. Decide what the product cannot tolerate, build the insert around that, and confirm it on a sample before bulk production begins.
The Bottom Line
Confirm every choice on a physical sample before the run starts. Tell us what you are packing, how many you need and when you need it, and our team will come back with structure options, materials and pricing within a business day.
