I bought this:
http://www.bintel.com.au/Accessories...oductview.aspx
And this:
http://www.bintel.com.au/Accessories...oductview.aspx
from Bintel in Sydney. Apparently if you're going to be somewhere REALLY cold then you might need the better straps though.
If you're in Sydney pop in to Bintel and they'll advise you on what you need, they helped me a lot.
