A bunting bag for children, where the bunting bag for children comprises a main part which is designed to be connected to a bottom part by means of a zipper, and a hood-shaped part containing an adjusting device. The bunting bag is opened and closed by means of a central closing and opening device, where the main part is provided on each side edge with a wind flap extending along the side edge and a lower wind flap extending round the main part's circumference, which wind flaps interact with a wind flap provided in the bottom part, forming a wind flap on an inner and outer side of the closing and opening device and the zipper, in order thereby to prevent through-flow of air through them.