Duck - Car Doors/Windows Safety Guard Duck Car Doors or Windows Safety Guard prevents accidental injuries to your child�s fingers. Car doors or windows fascinate little ones and they pose dangers to their delicate fingers. The mouth of the guard is flexible so that it can fit into various thicknesses of glass and doors. It has a firm grip. It can be easily inserted onto door rim or window glass. It is sturdy and durable. It can be used when the child is in and around the car or when traveling or stationed. It is one of the must haves for your car for a safe journey.