Baby Merino Wool Jumpsuit Emerald Fall Winter with Covered Paws and Feet Clothes for Babies, Infants, and Children, Newborn Layette at MotulinKa Infant Car Seat Snow Suits Buckle Me Baby How to Dress Your Baby for Cold Weather Dr. Green Mom Winter Safety FAQs Safe in the Seat 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