Those measurements will make a small baby quilt- not too small though. Good for a new baby. In U.S. inches they would be about 51" X 31". You could cut off some of the length and add it to the width to make it a bit wider to wrap baby if you want. I'm not really sure what you mean by batting and polar blanket...are you planning to use the polar blanket as a batting in a quilt? If that is the case I would make it wider since the batting needs to be a bit larger than the quilt to allow for the quilting.