The company has this to say about synthetic leather.
> Fish leather is more ecologically sound than vegan leather alternatives because it requires less energy than the creation of vegan leather, it does not include petroleum products, and it works with the circular economy using existing waste from food fisheries to create a durable finished good. Fish leather doesn’t need the extra (chemically induced) step of removing hair that mammal leather requires, either.
> Fish leather is more ecologically sound than vegan leather alternatives because it requires less energy than the creation of vegan leather, it does not include petroleum products, and it works with the circular economy using existing waste from food fisheries to create a durable finished good. Fish leather doesn’t need the extra (chemically induced) step of removing hair that mammal leather requires, either.
https://www.7leagues.com/leather