Only company that makes an adult hat loom
(WA State, USA)
Even though I mostly use the In The Attic round looms, I live Knifty Knitters adult hat loom. Its purple in color and sized just a little bit wider than their green loom, making it the perfect size for adult hats. I have several adult hats on this loom and have not had the pegs break or wear out. Plus, this adult hat loom is very easy to use, just like any round loom, and can be used for other projects.
A friend of mine used this sized loom for a tote bag. Unfortunatley, ProvoCraft stopped making the Knifty Knitter round and long looms, but Boye has taken over this market and according to what a rep told me, they will soon come out with the adult hat loom for their line of round/long looms.
You can find this loom, though on Amazon.com and Ebay. I definetly recommend it if you are wanting to make lots of adult knitted hats or round drawstring tote bags.