Woven poly-propylene bags are ideal for dried goods, animal feed and more. Full-color and spot printing is available. WPP sacks come in a variety of sizes and can be custom fitted to your needs. Our bulk bags are versatile. They can hold a variety of wet or dry materials – quite useful as sand bags, parts bags, feed bags and much much more. Sizes range from 10 cubic feet to 100 cubic feet, holding up to 4,000 lbs.