It was a sort of collar. Knitted, with tiny buttons up the front and a proper collar at the top. A bit like the top bit of a polo shirt but knitted.
She had it on under a long sleeved round neck tshirt. It went down under the t-shirt about 4 inches at the front and back.
Apparetnly my grandmother invented it when she used to get a cold neck. It meant that unlike a snoody type thing you could button it on and off and not trash your hair.
It looked really nice
You could jazz up all sorts of tshirts with it and whip it off when you got hot
Anyone seen anything similar in the shops?