Kay size is 50"x 67" 2) I used black 80/30 Hobbes Levi backing 3) yes it is heavy. Next time I'll use a lighter Levi fabric for backing and I think I will use a Flannel or lighter batting. If I use flannel I will wash the flannel 2 or 3 time before I use it for a batting. If you need more info. PM me.