San Francisco-based company Black Ember has unveiled its second range of backpacks. The newest generation of “modular urban backpacks” includes a variety of highly functional, sleek, waterproof urban bags designed to keep your precious valuables safe from any harsh climate or environments. The meticulously designed backpacks are constructed from carefully chosen materials, with a specific function and aesthetic in mind. Successfully funding its inaugural 2014 collection through a Kickstarter campaign, the company has now expanded its offerings, allowing you to specify your backpack by selecting from 12 unique modular accessories. You can pre-order the backpacks by visiting the company’s.