Global Luggage�۪s award for the most multifunctional and all-round awesome bag goes to Knomo's Harewood Slim Tote Backpack. The malleable design expands from a slim profile to voluminous backpack by simply unzipping the sides. Brilliant for packing in gym clothes for a post-office workout or carrying overnight clothes for a weekend adventure. Need a more formal look? Detach the shoulder straps and carry as an elegant tote. This really is a one size fits all bag.