A flexible container incorporating flexible front and rear sheets and one or more container ports disposed in between the sheets are discussed. The one or more container ports each has a pliable attachment flange and an integrally molded nozzle. The pliable attachment flange has a first configuration whereby the attachment flange collapses to enable heat sealing the attachment flange to the sheets and thereafter substantially recovers its shape to provide a fluid pathway with the port. Various terminal ports, terminal caps, and rubber septums may be useable with the one or more container ports.
