I am very impressed with this sleeping bag! The weight is 1950g and it packs down ok. Preferring to use a slightly larger rucksack and not have to struggle to get my kit into it I don't use compression bags I just put the sleeping bag into the bivvy bag and squash it into the base of the rucksack, this way every available space is used in the base of the rucksack and the sleeping bag never gets too compressed.
The first night I used this sleeping bag I was in a hammock, the temperature dropped to 2 degrees celsius and I was too warm. Though I do sleep fully clothed when in the hammock, I was wearing military combat trousers and a cotton t-shirt.
The second time was on Pen-Y-Fan in a tent on a very cold, extremely windy night. The temperature was recorded at 1 degree celsius and the maximum wind speed recorded that night was 60mph. I kept the sleeping bag inside the bivvy thankfully because by the time we decided to give up and go back down there was about 1cm of water in the bottom of the tent. The sleeping bag was wet, even inside the bivvy, but I hadn't noticed that it was wet due to the fact that it was still very warm.
On the Solo trip on the Black mountain on the 16th February 2013, the lowest temperature recorded was -2 degrees celsius, I slept totally out in the open without a tent or a tarp covering me. The sleeping bag was in the Hunka bivi bag. I did wake a few times during the night but this was due to lumps and bumps on the ground causing pressure points, not due to me feeling the cold. I could not feel any cold spots and I slept only in my underwear, no technical base layer, just a pair of boxers! In the morning there was a layer of ice on the bivi bag. I still woke feeling warm.
The coldest night I used this bag so far has been -5 degrees celsius. I did wake once due to my feet being so cold that my feet were very painful. This was because I'd somehow pushed my feet under the tight bottom edge of the tarp in my sleep and the tarp was compressing the bag around my feet. Once I'd pulled my feet back under the tarp they warmed up again in no time.
Since that trip I've started using a simple trick, as I have found it takes about half an hour for my feet to warm properly during the winter in any sleeping bag. I filter water ready for the morning but still boil it to be on the safe side. This then gets poured straight into my '58 pattern water bottle, which I use as a hot-water bottle. I have not tried this with any other type of water bottle!
The first night I used this sleeping bag I was in a hammock, the temperature dropped to 2 degrees celsius and I was too warm. Though I do sleep fully clothed when in the hammock, I was wearing military combat trousers and a cotton t-shirt.
The second time was on Pen-Y-Fan in a tent on a very cold, extremely windy night. The temperature was recorded at 1 degree celsius and the maximum wind speed recorded that night was 60mph. I kept the sleeping bag inside the bivvy thankfully because by the time we decided to give up and go back down there was about 1cm of water in the bottom of the tent. The sleeping bag was wet, even inside the bivvy, but I hadn't noticed that it was wet due to the fact that it was still very warm.
On the Solo trip on the Black mountain on the 16th February 2013, the lowest temperature recorded was -2 degrees celsius, I slept totally out in the open without a tent or a tarp covering me. The sleeping bag was in the Hunka bivi bag. I did wake a few times during the night but this was due to lumps and bumps on the ground causing pressure points, not due to me feeling the cold. I could not feel any cold spots and I slept only in my underwear, no technical base layer, just a pair of boxers! In the morning there was a layer of ice on the bivi bag. I still woke feeling warm.
The coldest night I used this bag so far has been -5 degrees celsius. I did wake once due to my feet being so cold that my feet were very painful. This was because I'd somehow pushed my feet under the tight bottom edge of the tarp in my sleep and the tarp was compressing the bag around my feet. Once I'd pulled my feet back under the tarp they warmed up again in no time.
Since that trip I've started using a simple trick, as I have found it takes about half an hour for my feet to warm properly during the winter in any sleeping bag. I filter water ready for the morning but still boil it to be on the safe side. This then gets poured straight into my '58 pattern water bottle, which I use as a hot-water bottle. I have not tried this with any other type of water bottle!