They are the most eco-friendly packaging I was able to find. 

It is made from corn starch with a man-made binding agent added for flexibility.

And the best bit … It can be composted at home! Yip, when you’ve finished using it, just put it in with your food scraps and garden waste, and before you know it, worms will be eating it for breakfast. Better. Right.
 It is biodegraded as evidenced by the team’s own backyard compost tests. They do suggest that you pull my layers apart before composting to speed things up.

Commercial Composting facility.