OptiFlow™ II, Nano Flowable Composites, LC is a light-cured, high-radiopaque, resin-based flowable composite. Its thixotropic properties impart ideal flowability for improved adaptation making it ideal as a liner/base. Formulated with nanoparticles provides strength, polish-ability and wear resistance when needed. Also fluoride-releasing to prevent caries. 4-Pack: 4 x 1.5gm Syringes and 20 Blue-Flo-Tips Store at room temperature (64-73 F) Non-Latex Shelf life: 1095 days A