[Closed] ultra light sleeping bags

If you’re really going ultralight then a PHD half-bag and a down jacket is the way.

Consider a quilt too

Which 2 seasons? 😜 Better to think about temperature ratings rather than seasons.

I know someone with the SP0 version of the linked bag and had a very warm night in it earlier this year. Does look gossamer thin though!

I've a PHD Minimus 200 which I think is usually only available in their sales - 430g and rated to around 5C from memory. It's about the same price as the S2S SP0.

My other lightweight "bag" is a Cumulus 150 quilt. Same rating as the PHD bag but about 70g lighter. Around £150 if you can get hold of one, just looking around and most seem out of stock. Not everyone gets on with quilts so may not be an option for you.

For a 5C rating that 400g +/- seems to be the going weight across the quality manufacturers. Also remember that what you sleep on can have just as much effect on quality of sleep as what you sleep in. A bag rated to 10C on a good mat will feel just as warm as a bag rated to 5C or better on a poor mat.

I have an alpkit quilt which is great but I’m a very mobile sleeper. It’s going to be going in my motorbike panniers so I really want just the one thing rather than the half bag and jacket

I has a Mountain Equipment Dewline which I used to use for Mountain Marathons; think I sold it on here a while back. I also had one of the KIMM synthetic bags from early 1990s, which was OK, but not as warm or light as the Dewline.

ME Dewline owner here, still going well after 20 years winter use. I'm very much an advocate of lightest bag and down jacket.
The bag you linked, I'd be happy using that but would definitely have a lightweight down jacket handy, it can dip quite cold at night in this country even in summer often when you wouldn't expect it ie after a lovely clear sky day. light down jacket is handy round camp as well, sitting up in bed cooking etc.

I've seen good reviews of this:
https://www.amazon.co.uk/dp/B01CEVT918/?coliid=IRV0A4O8YPXLT&colid=2AQVUZVRDXQGR&psc=1&ref_=lv_ov_lig_dp_it

Can't beat the price!

I am a very hot sleeper, tho I have found myself a bit chilly a couple of times this year, I have found a silk liner solves that. Having looked at the phd stuff (I used to have a pair of mitts by them) I can’t currently afford both... let alone both made by them! 😁

ME Dewline owner here, still going well after 20 years winter use.

Impressive, I used to use a Snowline 750 in winter...

I got an ME firefly recently. Only used a couple of times, but seems really good. Worth a look

I’ve got a s2s spark 1. I twin it with a silk liner and merino long johns and a base layer top. Was camping out by the coast in March this year at just above 0 and it was fine. It’s quite a compact shape so if you are broad shouldered or a side sleeper it’ll be pretty snug!

PHD Minimus here as well, superb bit of kit and with a down jacket got me through a -15 night last winter !

I've had my PHD Minimus with 300g of dead goose down to -10c avec a Primaloft and it was fine. I use it for 3 season bike/back packing and it's ace. I also have one of their Hispar 500g fill jobbies and despite losing a kidney to buy it, have only used it once as the Minimus is so good. I'm a bit of a sleeping bag fetishist and also have an ME Iceline and and old ME Redline for big stuff (though I'm unlikely to be in it in sych terrain these days).

Another vote for PHD here. I have 200g and a 300g fill bags. For me the 300g is too warm for a 2 season bag. I used the 200g bag on a 2 month tour and it coped with the odd below freezing night with a fleece top, Ron Hill trackies, and a hat. 5C is probably an accurate rating without any extra layers worn.

The other big advantage of PHD if you are not average size is the choice of length and widths. At 6ft3 and 16stone the long wide size is perfect. Standard size proably OK up to 6ft and 42-44 chest. The wide is a loose fit for my 46" chest.

The down fill is increased/decreased proportionately for different sizes. LOng/wide therefore ends up 20% heavier than the standard bag. A small person with a slim/short bag would get something lighter than the quoted weight.

ME Dewline owner here, still going well after 20 years winter use.

Impressive, I used to use a Snowline 750 in winter…

Used in conjunction with a Dewline down jacket (and next days baselayers). We used to camp up at Red Tarn every time the snow conditions were good enough. For winter campsites I had/have a big cosy Rab bag.

I have found a silk liner solves that.

I've tried liners (mainly to try and prelong getting the bag laundered) but I get too screwed up in them even to the point of claustrophobia. I generally use next days clean dry baselayers and wear a beanie (to keep the bag clean from greasy hair as much as adding warmth). they're something I would carry anyway so no added weight/bulk.

Oh, and what Whitestone says about your choice of mat, often overlooked I would imagine. If you feel cold during the night it can be as much a mat issue as a bag issue or both