As a pediatric Occupational Therapist, I have a strong knowledge of kinesiology and positioning of children to help them achieve the function that they need to achieve. Along with this training comes the knowledge of where to hold a child to inhibit movements that need to be avoided. I have developed my patent for this product to incorporate these body movement principles. The device's structure is like a vest, and the straps originate from behind the child so that it is in contact with the child at all times. The child is unable to rotate or slide up or down inside the vest-like straps.
I have seen other straps that originate on the outer portion of a changing pad, which gives the child space to wiggle free, or turn over. Others I have seen make a cross over the child's chest, which can be dangerous because if the child wiggles down, it could potentially choke or strangle the child.