Shopping for a pair of new shoes? How about this time you choose something that's not really new? That's actually repurposed, yet at the same time quality made and stylish?

The San Francisco based footwear startup Rothy's offers fashionable sustainable shoes, knitted from recycled certified polyethylene terephthalate (PET) bottles, which are processed into the filament fiber that is later developed into yarn. Rothy's are the first shoemakers that use 3D seamless knitting via the company's own Rothy's machine. Because the shoes are machine-3D-knitted, there is far less waste that usually appears during shoe production, when shoemakers have to throw away excess fabric or products with defects. 

Everything about this carbon-free shoe can be fully recycled once the shoe is no longer wearable - you simply download a shipping form from Rothy's website and then send your pair to the company's recycling partner PLUSfoam.

There are 2 styles of Rothy's lightweight shoes to choose from - The Flat (retailing for $125) and The Point (retailing for $145) - and 17 color combinations.