During cold weather, what is the best way to keep an infant warm in a car seat?
During cooler weather, store the car seat indoors until it's ready to be used. Use a blanket over the straps, and avoid using any car seat covers or items that will come between your baby, the harness straps, and the car seat, as they may interfere with the protection provided in a crash. Mittens, hats, and booties are also helpful.