If it is a suit with many buttons, it may be broken if it falls from high altitude because of its large overall weight. I bought two sets of belt buckles online, one set is broken and the other is in good condition.
As for stainless steel, under strong impact, it is easy to have pits. Even the WMF pot I bought was smashed out of the pit, let alone the ordinary stainless steel lunch box.
So if you need to mail it, you need to strengthen the packaging.