GEO BAG AND GEO TUBES Geo bag and Geo tubes are sand-filled high-strength Geotextile bags available in the various sizes and are used in riverbank, beach protection and offshore breakwater. Capability Effective Retaining Wall Deaden Sea Waves Practical and Easy Installation Material from Sand Around Efficient and Effective Application Protection for Beach Abrasion Breakwater Containment Dikes for Dredge Materials Wetland Construction