Best Used For 120-140GSM Thinner Posters, flyers, simple crafts 210-300GSM Medium Magazine covers, high-quality flyers, scrapbooking 350-450GSM Thick and sturdy Business cards, invitations, postcards, packaging  
Carlin emphasizes the importance of not packing the box while sitting in a room in which weed has been smoked because the post office, he says, tests for residue
Decreased Cartridge Life: Overdrawing can also burn out your cartridge faster, not to mention the possibility of a harsher, less enjoyable vapor
Not all ash is the same, though
I mentioned on my Six Insights From Pitti 102 post a few of those there who were wearing it: Peter Zottolo had a suit made from it that he had the jacket for while there