I've used this on the Overland in TAS in February, and the Cape to Cape in WA in September and was plenty warm enough on both occasions.
Price: $150
Features:
- Size: Regular, mens (user height up to 187cm, I'm 177cm)
- Stuff sack volume: 11L
- Material: 'Thermolink' Synthetic down
- Comfort temperature: -5C
- Limit temperature: -22C
- Weight: 1.29kg
One Planet provide great customer service and offer wash, repair and down top up services.
https://oneplanet.au/product/sac/