Use the first two years no comforter. A quilt is too hot for a young child. In addition, a quilt can not be properly tucked in. Also, children can reach their trampling and turmoil in the case. This is dangerous because of the risk of suffocation.
You could use a blanket use in a duvet cover, but then the blanket must be the same size as the cover. The duvet cover should be large enough so you can tuck it into the bottom and sides under the mattress at least 10 cm. Be sure to close the cover properly. Not Fold blanket double in a duvet cover.