Sleeping systems - bags, pads, matts, liners

I mean, they're expensive and fairly reputable brand and they make bags but I don't have first hand experience. Maybe throw it in your list and if one comes up you can ask for any one's experience?

I've had a Mountain Designs bag for years. They're an Aussie brand. Used to have shops but think they're online only now. Certainly not a lightweight down bag but it's clearly durable.

https://www.mountaindesigns.com/equipment/sleeping/sleeping-bags