Exercise ball a chair because of ergonomic considerations or biomechanical reasons. This large plastic ball, known as a "birth ball", can also be used during labour to aid the descent of the fetal head into the pelvis. Sitting in an upright position will also aid fetal positioning and is more comfortable for the woman. Sitting on the ball with arms placed on a bed, table or otherwise sturdy object for support and gently rocking the hips may help the woman during contractions and aid the natural physiological process of birth. Exercise ball An exercise ball, also known as a Swiss Ball, is
Super Elastic Bubble Plastic Super Elastic Bubble Plastic Super Elastic Bubble Plastic was the brand name for a children's toy manufactured from the 1970s through the 80s by Wham-O. It consisted of a tube of viscous plastic substance and a thin straw used to blow semi-solid bubbles. A pea-sized amount of liquid plastic was squeezed from the tube and made into a tiny ball. One end of the straw was then inserted into the ball, and the user would blow into the other end, inflating the plastic into a bubble. The bubble could then be removed from the straw by pinching the hole closed,