How big is the stuff sack?
It occurs to me that, with the addition of the Sapphire/White Dyneema Clear Bottom Yarn Stuff Sack and the fact that the Stuff Sacks are being sold separately, TB + crew might be wanting to sell these to a larger audience than just knitters.
That said, am I the only one who has no concept of how large or small these things are? I really can't tell from the pictures, and I am not familiar with the whole yarn/knitting thing enough to be able to guess from the size of a.. ball? of yarn.. see, I have no idea!