Marks and Spencer's is great for undies but I think they have excelled themselves in the thermal underwear dept. The great thing about the new thermals is that they are thin and soft - not the horrid thick type. The thermal tights are very elegant and smooth. They come in black, brown or grey and a grey spotty pattern. Priced at £9.50. There is also a wool thermal tight - which is a bit coarser than the man made thermal tight. They should attempt a navy thermal tight. They wash beautifully on a normal 40 degree mixed wash. ( Don't attempt the cottons programme which is too vigorous).