You can get it from your local pet barn or Petcare 2000 store, or ask your local petshop to obtain some from there supplier(Pet Pacific). Brand is 'Zoomed'.
Pets R Fun in eastgardens stocks it, but best to call ahead about avalbility, they only get smaller amounts in and sometimes they get cleared out quick
Animals can bury themselves in it (my Bluetongues love hiding in it).
It looks more natural than newspaper.
Cons:
Woodies disappear into it very quickly.
If you get mites, they will happily live in it and will be harder to see, and you will need to do a complete substrate change before spraying (would recommend you go back to newspaper until your mites have all gone).