Take the practicality and functionality of your average backpack, kick up the quality a notch or three, swirl in some progressive style, and wrap it in superlative environmental friendliness, and you'll wind up with the Green Guru Spinner Backpack. Made entirely of recycled materials such as its trademark discarded bicycle inner tubes and PETE fabrics the Spinner comes in at a just right size of 1368 cubic inches or 22 liters but is lightweight to boot, at just 1lb. 5oz. or 879 grams. The Spinner Backpack's breathable, mesh lined shoulder straps promise comfort, the removable waist strap keeps the pack from bouncing around, and compression straps on either side of the pack keep bulk and cargo in check. Gusseted side pockets and a rear facing reflective and reinforced daisy chain all boost utility. Finally, feel free to load your laptop into the dedicated pocket, and fear not for its safety: the Spinner Backpack is completely waterproof, so any and all cargo is safe from the elements.