In finance, a futures contract (more colloquially, futures) is a standardized forward contract, a legal agreement to buy or sell something at a predetermined price at a specified time in the future. The asset transacted is usually a commodity or financial instrument and the transaction is usually done on the trading floor of a futures exchange. The predetermined price the parties agree to buy and sell the asset for is known as the forward price. The specified time in the future — which is when delivery and payment occur — is known as the delivery date. Because it is a function of an underlying asset, a futures contract is a derivative product.