Which type of cushioning is generally used for fragile items that need to prevent shock during shipping?

Closed cell foam is widely recognized as an effective cushioning material for fragile items during shipping because it is specifically designed to absorb shock and impact. Its structure consists of small, sealed air pockets that provide excellent resistance and support. This makes closed cell foam particularly useful for protecting delicate items from sudden jolts or vibrations that commonly occur during transit.

In contrast, bamboo wraps, while environmentally friendly, typically offer limited protective cushioning for fragile items. Plastic pellets, although they can provide some level of cushioning, are often less effective than closed cell foam in terms of shock absorption. Wooden boxes provide solid protection, but they are rigid and do not offer the same level of energy absorption as closed cell foam, making them less ideal for items that require additional cushioning against shocks. Therefore, the use of closed cell foam is the preferred choice for safeguarding fragile goods during shipping.