Anvil case (see road case) refers both to a brand of equipment transportation cases as well as a generic reference to similar products under competing brand names (much as Q-Tips refer to a brand as well as cotton swabs in general). Most Anvil cases are designed to be ATA and IATA approved for transit via air cargo. The original Anvil case company has changed ownership several times and is now owned by a former competitor, the Calzone company. Cases are typically constructed of plywood covered with colored plastic, and feature heavy duty edges, corners, and hardware which is attached with rivets. Although these types of cases were originally designed for transporting musical equipment, cases are now configured for a large array of movie making, computer, scientific, and military equipment.