It is something that a lot of parents do without being aware of the consequences
Many parents are not aware of the risks of covering over their babies cot or buggy with a blanket to try to provide shade. The cover would restrict the air circulation for babies and it would become dangerously hot very quickly.
Results of an experiment carried out by the paper found that a covered pram left out on a warm day (approx. 22 degrees) rose quickly to 34 degrees within a space of a half an hour and 37 degrees after an hour. This would greatly increase the risk of sudden infant death syndrome.