If trainers aren't your number one choice for travel as you don't think you'll get the wear out of them while away, then why not go for a pair of sliders? A versatile pair like these neutral ones from H&M will answer a lot of your style prayers. Save time at security if they ask you to take your shoes off, kick them off on the plane in order to relax, and wear them to the beach or with your favourite dress in the evening. If you're going on a short break and you're not a heels kinda gal, you could get away with just this one pair of shoes for your entire holiday. Pack socks in your hand luggage if you get a little cold mid-flight for the ultimate airport outfit accessory.