Can I use aftermarket products to help install carseats or position seatbelts?
In general, you should not use any products not recommended by the manufacturer of your carseat or vehicle. Despite the claims of some companies, these products are NOT regulated by any federal standard, and have not been tested or certified by carseat manufacturers. This is not to say these products do or do not work, but your choice to use them might compromise the safety of your carseat.