ID Holders are small holding cases which are used for carrying personal items such as identification documents, credit cards or currency. ID Holders are generally made of leather or leather-like materials and feature a special see-through ID window for ID cards, card slots and a compartment for paper money.
About Trifold:
A Trifold is a folding case or Wallet composed of three panels which are used for carrying personal items such as credit cards, cash and identification documents. These folds or panels usually feature an inner face with compartments. When the folds are away from each other, the Trifold can be opened on the upper edge to allow the placement of paper money or small documents.