Refill beanbag bladders. All of our beanbag bladder covers are made using 70% polyester, 30% cotton fabric with an AEGIS anti-bacterial, anti-mold finish. Our beanbag fill is 100% high density virgin fill. All of our bladders are constructed using double stitched seams for greater durability and a double zipper which is closed, snipped and glued after filling to ensure that children and infants are safe and not in any danger of suffocating inside an open bladder full of beads. Kids round Fillers can be used with all of our kids, round covers. 5 cubic feet of fill.