Eyoo, I've been looking everywhere for envelopes similar to these with no luck! I believe they're made of cotton rag? I've tried Etsy (the only ones I found were too small), Khadi papers (they only had white) and just general google searching. Anyone know where I can buy them? We're looking for a cool light gray color like the second or third image and prefer euro flap (Triangle shaped flap) but we're cool with the square flap too:
Thanks!