I'm a backpack made from recycled plastic bottles (10 to be exact). The material used to make me comes from a thing called rPET (Recycled Polyethylene Terephthalate), which is the fibre created from recycled plastic.
I weigh just 90 grams, so I'm super lightweight, in fact, I can stuff down into a fist-sized pouch, and you can clip me on to your belt or handbag using my carabiner.
Carrying water around for people was ok, but now I'm so much stronger. I'm 12cm deep, 28cm across, 42cm high and have a 14-litre capacity.
If you pop your phone in my pouch, you can use the headphone port-hole to listen to some tunes while we walk :D
I also come in a variety of colours, so I won't cramp your style.
P.S. If you like my material, check out my Bread Bag buddy too!