Bulk bags are manufactured using woven polypropylene fabric, they are also known as FIBC bags, Big Bags, One Ton bags, Big Sacks, Super Sacks, etc. Safe weight limit: 4200lbs Duffle top bags feature a thin piece of fabric sewn onto the top seam of the bag and can be folded down around the outside of the bag to allow a full opening then once loaded it can be raised up and tied off to seal the product off. Flat bottom Straps: 4 10" White corner loops Document pouches: 2 U Panel Type A- non flammable products only Safety rating: 5:1 180 bags per pallet