An interbody osteogenic fusion device is provided that includes opposite end pieces with an integral central element. A bag cuff grab is formed on the extended edge portion to engage and at least temporarily hold in position a bag placed in the container while product is placed in the bag and container. 6, a hardness HsB of the bead filler is not less than 65 and not more than 80, and the hardness HsR of the side reinforcing layer is not less than 75 and not more than 85, a size relationship between the hardness HsB and the hardness HsR is HsB\u2266HsR, a value TB of tan \u03b4 is not more than 0.