Capa de brumas
A mistcloak is the cloak worn by Mistborn while travelling through the mists in order to obscure their figure and so prevent them from being seen. It is of a light material and consists of ribbonlike strips of a gray cloth.
Per Brandon when being asked about creating a mistcloak:
A mistcloak would be hard to get right. I've seen several people try, and they never quite feel right to me. Maybe they are one of those things that work in my imagination, but might not work in the real world.
What I would be looking for is something enveloping, something grand, yet also much more light-weight than most of the ones that people have made. I know that Vin describes hers as heavy, but that's all relative.
But here's my best answer to your questions:
Colors: All the same shade of dark, charcoal gray. How wide are the strips: Between a half an inch and an inch wide. Material: Cotton, perhaps. Lighter than canvas or wool, for certain. However, I do imagine each tassel being sewn individually, perhaps with a thicker back and an inside that is of something softer and lightweight. Are all the tassels the same length: No, but close. Within an inch or two of one another. Do they drag: No. They're cut so that they obscure the feet, but don't drag. How many layers of tassels: 1 and a half.
The real trick, I think, to making one work would be to, in my opinion, make a cloak which looks cool on its own. Then, slit the bottom 2/3rds up to about the rib-cage area. Sew these into tassels, then sew some more tassels to the inside. Then, perhaps work with the shoulders/inner layers to make the cloak fall down so that it looks enveloping and the sides can fall straight.
Does that help?
Best,
Brandon