Though its shape loosely resembles a backpack, Rebecca Minkoff’s The Rider Bag is definitely not your first grade school bag. This chic purse is full of unexpected details, like four generously-sized exterior pockets (all the better to keep coins, keys and your electronic accessories within easy reach), a gorgeous slate of navy leather and a striped, menswear-inspired interior that’s utterly cool. Detach the large strap and carry it in your hand, or make the most of all that space, ...