I have the Rhine in Coated Canvas. It almost feels like leather. Extremely sturdy for sure and proven waterproof for me. Cote et Ciel backpacks in general are kind of massive and monolithic looking. It doesn’t stop with the fabric - the zippers are massive too and the adjustment straps are as thick as they can possibly can.
I love Cote et Ciel but I found them made of very thick canvas for the international fabric and a bit too heavy for my likely. Do you know if they've got any better?