When one goes searching for a new backpack, they will find many different types to choose from. The vast majority are made from some sort of fabric, which conforms to a general shape, but will change a bit, depending on what’s inside. I’ve seen a few made from a hard plastic (or similar substance), which ensures that anything inside will survive a hard impact, should the bag be subjected to such a thing. This Solid Gray backpack falls into that latter category.

This unique backpack is constructed from one single sheet of polyprene. If you’re not familiar with the substance, it is traditionally found in fire service equipment, due to its light weight and durability in extreme temperatures, in addition to everyday use. The Solid Gray is one of the first consumer products to be manufactured using polyprene. You’ll find padded compartments for your laptop, and smaller ones for carrying other items. If you want a unique bag to carry around campus, or anywhere else, this one will set you back just under $160.