Picture this: it’s a nice day, so you decide to break out some boxfresh kicks. Suddenly, the weather turns, and those clean treads are in danger of becoming anything but. Not to worry though – you’ve stashed some beaters in your backpack (*DJ Khaled voice* ‘You smart!’). Whether it’s for trainers or textbooks, a rucksack is a style essential. Peep our favourite 10 below…