Longchamp recently came out with their MY PLIAGE SIGNATURE bags. Basically, you can customize them however you want with the relief of knowing that they're eco-friendly. But if a bag is mass-produced, is it really eco-friendly? It seems like that's the opposite of being sustainable. You know the saying, reduce, reuse, recycle. Sure they're reusing recycled plastic bottles to create the fabric but they're not helping the reduce part of being sustainable when we're still consuming the bags and they're creating more products. Guess you can say the same for any brand that boasts about being sustainable.
Personally, I'd rather buy a bag that was made from recycled materials but hopefully they're not creating these bags just to hop on a trend of being sustainable.