Country Life Trending: Credit: Oxley Hetty Lintell picks out the best hats for this time of year and offers tips on looking after them. To keep your hat in tip top condition always rest it upside down — this will help preserve the brim. Too much rain may cause a hat to discolour or lose its shape, so dry your hat by resting on its crown with the headband flipped out. Resist the urge to dry it on a radiator: leaving a hat in the heat (or the sun, when that returns) means the headband could shrink — whatever you do, dont’t use a hairdryer as you will damage the fibres.