I've had the Nano 2 for a couple of years now and it's been my go to bag for spring, autumn and winter camping. Link to YouTube temperature rating test: I think I paid about £70/$94 for the large Nano 2 but I've seen it cheaper depending on sales. I've been really impressed with the bag so far - it's a basic design (no neck baffles) but the workmanship looks good. Last week I took it out for a temperature rating test. I slept in a set of merino wool thermals, some thick hiking socks and a wooly hat. I used the thermarest xlite pad (regular) and slept under the Asta Gear Windwisper2 tent with a 4 season 3FUL inner tent. There was a slight breeze during the night and the temperature dropped to just below 0°C / 32F (recorded on a bluetooth thermometer). In the morning there was a frost on the grass and ice had formed on standing water. At no point during the night did my feet, legs, body or arms feel cold. In fact I would go ask far as to say I felt warm all night. I slept with my head out of the bag most of the night but pulled the bag over my head in the early hours as my face was feeling cold. The bag is really long and I think someone up to 6ft 2 with medium build would comfortably fit fully inside the bag. In conclusion I think Aegismax have got the temperature rating (5°C comfort 0°C minimum) for this bag wrong. I would say this bag has a comfort rating of 0°C and a minimum temperature of -5°C and I'm not a particularly warm sleeper (always the last to take my coat off at work!). The Nano 2 bags feature: - box baffles throughout - a box foot - zelcro and drawcord closure at the top - a 3/4 length 2-way YKK zips - 15 denier water repellent nylon - 800 fill power hydrophobic down - a compression sack and a mesh storage bag The large size Nano 2 is 210cm long (advertised as 200cm) and weighs 798g / 28.1oz in the stuff sack (advertised 742g / 26.2oz).