MakerBot PLA filament is a bioplastic derived from corn. It's guaranteed not to have any heavy metals, phthalates or BPA.
Every filament color is comprehensively quality tested at both 100-micron and 200-micron layer resolutions to verify that the filament will perform every feature that MakerBot MakerWare and MakerBot Desktop software offer.
If you're new to 3D printing, MakerBot PLA filament is a good material to start with because it's easy to use and performs well on most prints.
Add the products you would like to compare, and quickly determine which is best for your needs.