Sleeping bag for summer alpine climbing

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I'm looking for recommendations for a lightweight down bag for summer alpine bivying. Last time I used an ME Xero 200 which was a bit on the chilly side, even with lots of clothes on inside the bag. It'll be used with a Thermarest NeoAir XTherm and either a bivy bag or lightweight tent. TIA! David

 wbo 23 Jun 2019
In reply to David Kirsfelds:that's what I have and would have suggested! 

 tingle 23 Jun 2019
In reply to David Kirsfelds:

I have asked this before and have had very good nights sleep with bivvy bag, short foam mat+ short air mattress, bag or rope under legs, sleeping bag with 300g of good quality down and decent down jacket. The air mattress was only a luxury if I could be bothered to carry it. 

With your system are you wearing a down jacket? You could supplement your system with down booties or a warmer jacket? 

 MischaHY 24 Jun 2019
In reply to David Kirsfelds:

What's the budget? Western Mountaineering Highlite is 455g in medium with a comfort rating of 2 degrees (and from what I understand this is rather pessimistic, it edges closer to 0). Certainly not cheap though.  

In reply to tingle:

I have a RAB Neutrino jacket and I think I put this over my body as a layer rather than wearing it last time - I seem to remember that it was my legs that were coldest.

I didn’t use a sleeping bag liner and down booties sound like they could be nice. I’m tempted to buy some peripherals but was swaying towards a new bag as I like my sleep!

 SouthernSteve 24 Jun 2019
In reply to David Kirsfelds:

Have a look at the PhD site. Their bags are very good quality and warm. You could even get a rather specialised half bag to wear with a duvet if you desired e.g. https://www.phdesigns.co.uk/alpine-ultra-down-half-sleeping-bag-pied-deleph... although that always seems a waste for quite limited use.

https://www.phdesigns.co.uk/

I have had a Minim (before they split the range) for years which has been really warm and I sleep cold. Although for bivying I would be tempted to check that any bag is wide enough for those extra clothes, as that is quite narrow for me with a bulky top on. 

 Mark Haward 24 Jun 2019
In reply to David Kirsfelds:

Obviously we are all different but personally I would find the ME Xero 200 fine but with a few extras to top it up. I would add:

- Insulating jacket over the top of the sleeping bag rather than worn on the body ( can be zipped up to keep it secure / in place )

- Silk liner, change into fresh dry socks

- Do some sit ups when first inside the bag

- Put hot water into a secure bottle near the feet for a cosy start

- Eat fatty food such as cheese and have a hot drink before settling down to sleep

- Wear hat

- I tend to use a Z lite cut to shape which works for me, often using the rope underneath the feet end and rucksack for a pillow. Sometimes a short Therma Rest when I'm not on gravel.

- Ensure bivvy spot is out of the wind if possible. If breezy put lightweight hardshell zipped up over feet of bivvy bag.

Happy snoozing...

 Run_Ross_Run 24 Jun 2019
In reply to David Kirsfelds:

Have pm'd you, might have gone into spam. 

 tomsan91 24 Jun 2019
In reply to David Kirsfelds:

I have just got a duvet from Hammock gear in the US to work with the thermarest, plenty of fill options and a closed or sinched footbox set up. A much more budget option than some of the other brands out there though.

 tehmarks 24 Jun 2019
In reply to David Kirsfelds:

I have a Nunatak quilt that I've raved about many a time on here and can highly recommend (though the insanely cheap 'basic' version they used to do no longer exists, sadly). That said I've also recently bivied at altitude (planned, not on a route) with nothing but my down jacket and some fleece leggings quite comfortably...

Post edited at 21:41

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