On an especially bright and sunny day, it is galling to find yourself without sunglasses or at best, with ineffectual ones that clash with your outfit and with the look you have gone for. Persol sunglasses are both stylish accessories and effective eye protection.
The luxury Italian brand makes eyewear with coolness in mind. Prices are mid-range to high. Get a pair now, and avoid having to go to a tacky tourist shop on holiday.