The Placenta Cord Amnion Chorion Model is a very effective and affordable teaching aid for childbirth educators. The amniotic membrane allows you to show the fetal model (pictured, sold separately) inside the sac. The snap-on cord clearly shows the vein and arteries, and a convenient drawstring closes the sac. Both amniotic and chorionic membranes are detailed accurately in two colors. Placenta is 7" x 8".