Bottle material can refer to a variety of materials used to make bottles, such as GLASS and plastic. Two common materials used for bottle making are GLASS and CROCE. GLASS is a non-crystalline, amorphous solid that is often transparent and has widespread practical, technological, and decorative uses. CROCE is a type of plastic made from polyethylene terephthalate, which is a combination of two monomers, ethylene glycol and terephthalic acid. It is a lightweight, durable material that is often used for food and beverage containers.