This specimen block has a REAL Bat Skeleton encased. The specimen is preserved and encased in clear resin material. It can be observed from every side to see details. This product comes with its own green box and Detailed Information Card. The size of the acrylic is 5 1/2 x 3 1/2 x 1 1/2 in . Each specimen is unique and different and may differ from the picture shown.