Inserts Inside the Rigid Box

Inserts like EVA foam, molded paper pulp, thermal formed tray which is also referred to blister are placed inside the rigid setup box to hold and protect the product. Sometimes, the paperboard inserts are wrapped in textiles such as velvet, satin and linen to achieve a luxurious unique packaging experience.

For the EVA foam insert of the rigid box, the black color and the cream white color are the most common colors.
Source: https://www.fortuneprintings.com/Rigid-Paper-box/