A flexible hose for transporting food liquids, particularly for irrigation or the like, comprising at least one outer protective layer of a first flexible polymer material and at least one inner layer in direct contact with the fluid to be transported, made of a second flexible polyvinyl chloride -containing polymer material. The received packets are acted upon according to outcomes of the classification; and the flow state information is updated according to actions taken on the received packets. The administrator can supply financial parameters to configure the accounts where such financial parameters might include the amount of a recurring weekly allowance payment, an account interest rate, a list of investment instruments that the user would be allowed to transact with. The front wing also has a marking identifying the gas corresponding to the distance between openings.