The use of multi-layered films and tubing is common practice in the medical device, pharmaceutical, and packaging industries. A multi-layer structure can be used to target various barrier properties and extend packaging shelf life. It is also beneficial by imposing different functionalities in catheter tubing. Materials with differing chemical compositions often result in suboptimal adhesion and possible delamination when coextruded directly. With ReZilok Rx, each layer can be bonded together for maximum functionality, despite containing different chemical structures. ReZilok Rx is for use in disposable Class I & Class II medical devices.