The present invention provides fibrin microbeads that are biologically active and comprise extensively cross-linked fibrin, and a method for preparing the fibrin microbeads. The stretch resistant member is fixedly attached at one end to the vasoocclusive coil, and the other end of the stretch resistant member is detachably mounted to an elongated pusher member to allow for placement and release of the vasoocclusive coil within the patient’s vasculature. The laminates can be used to protect metal during storage and transit.