A comfy jumper during the coldest of spells is like a keepsake you never want to give up. <b><a href=" http://www.selfridges.com/GB/en/cat/theory/" style="text-decoration: none"><font color="black">Theory </font></a></b> ensures you’ll be reaching for its version time and again. Instead of wool, or even cashmere, the label uses silk blended with cotton that’s finely milled into a languid V-neck silhouette. Tonal ribbed trims outline the collar, cuffs and hem. Speaking of, the latter is notched in the back so it falls flatteringly over a pair of skinny jeans.