Thick clothing prevents the harness/vehicle belt or impact shield from lying tight against the body. Only a correctly adjusted restraint system can offer maximum protection. For this reason, your child should wear thin, well-fitting clothing. Thick clothing such as winter jackets and clothing with hoods (hoodies, teddy suits, etc.) as well as hats should be avoided. Once your child has been positioned in the seat, he or she can be covered with a blanket for warmth.