Bamboo/Cotton Denim fabric

looking to find a source where I can get fabric by the roll, of a blend of Cotton(preferably organic and bamboo yarn, ring spun into a denim material.
I call it bamboo denim. ! if you can find it or have it please contact me. I will also like to find a source for high quality organic denim fabrics, ring spun as well.
I would like to test the material and make a sample garment first before purchasing the quantity I would need. I would need 5 yards to do this for now.