They Have Wings

There is no doubt about the existence of angels' wings. As stated in the verse: [All] praise is [due] to Allah, Creator of the heavens and the earth, [who] made the angels messengers having wings, two or three or four. He increases in creation what He wills. As stated in the verse "Indeed, Allah is over all things competent." (Fatir, 35/1)  angels are not limited to a certain number of wings. As a matter of fact, it is reported in hadith sources that the Prophet Muhammad (saw) saw Jibril (as) with six hundred wings. (Bukhari, Bad’u al-halq, 6) 

It is not possible to say anything definite about the qualities of angels' wings. The human mind is incapable of fully describing and identifying it.