Definition of blanket. 1a : a large usually oblong piece of woven fabric used as a bed coveringb : a similar piece of fabric used as a body covering (as for an animal) a horse blanket.
The word arya was used for people who cultivated the mind and character. The aryans were the inhabitants of Aryavrata(India) and they followed Sanatan Dharma for many lakh years in the past, who spoke Sanskrit and practiced Sanatan culture along the banks of the rivers Saraswati and Sindhu.
In other words there is no racial evidence of any such Indo-Aryan invasion of India but only of a continuity of the same group of people who traditionally considered themselves to be Aryans. There are many points in fact that prove the Vedic nature of the Indus Valley culture.he Aryan invasion theory thus turned the  Vedas , the original scriptures of ancient India and the Indo-Aryans, into little more than primitive poems of uncivilized plunderers.