20 Pack Sand Bags, 17.5" x 26" Empty White Woven Polypropylene Sandbags with UV Coating Protection for Flood Control, Top Drawstring Design THICKEN, WIDEN, HIGHER DENSITY - 17.7 x 26 inches, EACH SAND BAG WEIGHS 70 GRAMS. Our drawstring sand bags is higher density, stronger toughness. UV COATING PROTECTION - 1,600 to 2,000 hours of UV coating protection (6 to 9 months), the polypropylene sandbags are perfect for water-resistant, dust-resistant, and pest-resistant, flood protection, construction projects, driveway, traffic. STRONG DRAWSTRING CLOSURE - The top seal has a drawstring design. Fastest time tie strings to tighten the woven sand bags. Our drawstring sand bags are perfect for flood control. Save your time and labor costs. EDGE STRENGTHENING - Hemmed top for easy fill, DOUBLE-SEWN bottom for extra strength. We value the toughness of the sand bags bottom more than anyone else. MULTIPLE USE - These sand bags for flooding are also useful to hold down garden furniture, trampolines, road signs, netting, covers, protective defense wall, tents and garden structures.