These were mine in college. They bring back images of the Marlboro man, but from a non smoking household. They were just popular back then. Now they are warm and fun.
There is a hook/clamp on one side of the right mitten and tiny ring on the left
they measure 9" long and 4" wide
I have "medium" hands for a young girl in the 1970s and they fit this "medium" woman of the 2020s