Swanson has applied an advanced process to develop a superior material formula for our PVC Marking Flags that promotes resistance to the market dilemma of breakage and tearing under high wind conditions. Swanson"s high-quality Solid Marking Flags are ideal for above ground marking in a variety of industries. From utility construction to line locating, hardware to forestry, landscaping and lawn care to pet containment - these flags ensure consistent communication and long-lasting visibility for your project.