Brooklyn based clothing company Outlier have designed this incredibly durable, lightweight and waterproof Minimal Backpack. This design is all about the choice of material - the expensive, non woven dyneema. Perhaps not the easiest material to work with, non woven dyneema is a fibre stronger than steel with almost limitless applications. The fibres are bonded together in multi-directional panels. From making racing sails to replacing steel cords on freight ships to aerospace technology, non woven dyneema fibre is tailored to a huge variety of uses.

One of these uses resulted in the roll top backpack, that can be packed down to fit into a jacket pocket. Available in white, the Minimal Backpack could certainly be used on a daily basis, and would no doubt be a worthy, lasting investment. It doesn't look too bad either.