Winter Coats and Car Seats: An Unsafe Mix FamilyEducation The WarmMe: The Safe Car Seat Winter Coat Alternative Winter coats add bulk around your child and prevent a snug car seat harness. Harness straps must be in contact with your child, not a coat. Always strap, then wrap when harnessing How to dress baby in winter: All your options for keeping them warm Today's Parent Winter Car Seat Safety: How to Keep Your Kids Safe AND Warm TheMonarchMommy