DH and I are off to Tromso in mid February to try and see the Northern Lights. Neither of us has done 'cold' holidays before as we don't ski. What do we need clothing wise? Tour cos provide thermal suits for Northern Lights chase but what do we need generally to be comfy? I think it's icy in the city so a bit worried about falling over. I also suffer sometimes from chilblains.
Thinking of looking in Decathlon/Mountain Warehouse /TK Maxx.
Any advice gratefully received!