Pointelle is usually quite girly, but this ASOS cardigan (£25) employs lacy knitting to its best advantage. The multitude of holes provide much needed ventilation, and a subtle pattern. Perfect for the deranged weather at the moment the fine knit means it wont take up a lot of room in your bag if it suddenly becomes sunny. It also comes in black, but I like the pale grey it looks great when teamed with a plain white tee.