TinyLayers guide
What Should Baby Wear in a Car Seat?
Quick answer
Thin, snug layers under the harness. Never put bulky coats under car-seat straps. Buckle first, then add warmth over the straps.
- Thin layers under harness
- No puffy coats under straps
- Blanket over straps after buckling
Why the coat rule exists
Puffy coats compress in a crash and leave harness slack. Warmth belongs over the buckled straps.
This is general dressing guidance, not medical advice. Every baby is different — for fever, premature birth, or any medical concern, follow your clinician.
Frequently asked questions
What about winter car seats?
Thin warm layers, buckle snugly, then add a coat or blanket on top.