TOUGHEST MATERIAL: Our woven polypropylene sand bags are built to endure the elements. All Heavy Duty Sand Bags and tie strings are treated with a UV inhibitor so they can stay intact after prolonged sun exposure.ULTIMATE FLOOD AND STORM PROTECTION: We engineered Sand Bags to keep your home and business safe from flooding. These sandbags are portable, easy to fill, and effective as building blocks when you need a quick dam or flood barrier. Sand Bags are a must-have for your year-round disaster and emergency preparedness kit.MULTIPLE USES: Whether you are working on a landscaping project, construction site, storing dry materials, or anchoring canopies and umbrellas,Heavy-Duty Sand & Utility Bags offer a wide-range of versatile uses. Convenient built-in tie strings give you total control over when, where, and how you want to use these UV-Treated utility bags.Size: 50x80cm 19.69x31.49in20pcs