There are many aftermarket products available for pregnant women. They work by positioning the seat belt below the belly in different way. Are they necessary? Usually not. Federal regulators and automakers often advice against using them. When should they be used?
“They should only be relied on if it’s otherwise impossible to get the belts positioned correctly and comfortably”
If you do want to have a look at aftermarket products for keeping the seat belt in pace you will find a few options below: