This holds a cake of sock yarn for on the go.

Edit 8/17/08
I redesigned the bottom of the bag, it was coming out too large. If you printed off the instructions before today, please look at the new ones.
I am sorry for any inconvenience this causes.

Edit 8/15/08
This bag is crocheted rather tightly. If you are not getting a firm fabric, you might want to drop down a hook size or two.
Not really a gauge, but a necessity for holding up to usage.