What is a common external packaging material for evidence?

A common external packaging material for evidence is a cardboard box. Cardboard boxes provide a sturdy and secure means of transporting and storing various types of evidence, ensuring it is protected from contamination or damage. They are particularly useful for larger items that may not fit into smaller packaging options and can be readily labeled, sealed, and stored in a manner that preserves the integrity of the evidence.

While other packaging materials like plastic wrap, padded envelopes, and Ziplock bags have their specific use cases, they may not offer the same level of protection or security for larger or more fragile pieces of evidence as a cardboard box does. Cardboard boxes also allow for better organization and identification of items when numerous pieces of evidence need to be transported or stored together.