Donegal tweed- a genuine Donegal tweed made by Magee or similar. They last forever and even resist rain. They are very expensive but worth it. It's worth looking on ebay. I only remember my mother buying two new winter coats when I was growing up, both of them Donegal tweed. We lived not too far from Donegal so going to Magees was not difficult. I love coats and have bought two Aquascutum wool coats on ebay, both fabulous. I was lucky to find a Donegal tweed coat in our local charity shop which fitted my daughter and I think she's now wearing it for the sixth winter. Goodness knows how long it was worn before that. She even wears it cycling to work, in all weathers, and it still looks good.