'Cover' in the Bible

And Jael went out to Sisera, and said to him, Come in, my lord, come in to me without fear. So he went into her tent, and she put a cover over him.

Then he said to her, Give me now a little water, for I have need of a drink. And opening a skin of milk, she gave him drink, and put the cover over him again.

They had no one to make arms, there were no more armed men in the towns; was there a body-cover or a spear to be seen among forty thousand in Israel?