If you had to choose just one summer-weight suit jacket, Club Monaco's 'Grant' style should be it. Cut in a slim fit and with a slightly shorter, more modern length than most, it's made from breathable linen in a neutral puppytooth pattern. The beige and cream threads complement each other so well it appears to be a solid colour from afar. Wear it with the matching trousers. Shown here with Club Monaco shirt, Common Projects sneakers.