Spark Pro

Yes, I used to use the Sea to Summit Spark Pro, but I found it didn’t work well for me since I’m a side sleeper — I’d often end up sliding off the pad. Quilts can be secured to the pad, which makes a big difference for someone like me. Also, I’m a 5'5" female, and most regular sleeping bags are way too long. Custom-made quilts are a much better fit.

I’m 6ft 187lbs. I’ve got room in it but I’d have more if I got the longer version. I just didn’t wanna carry the extra weight. I like the fact that the bag can almost turn into a quilt and has lots of spots for heat to escape. Edit: as in zippers if you get too hot. I sleep extremely hot so it’s nice to open the bag up on top and use it like a quilt almost

My spark pro from sea to summit you can unzip and stick your arms and feet out lol :) kind of gimmicky but I can see it being nice on cold nights It also weighs quite a bit less than the Coleman 15 degrees bag I bought before. The Coleman had higher D rating material and allowed you to strap the bag to the pad which I think is neat tho

I’ve always used mummy bags and they work great for me but it’s a matter of preference. Obviously you can’t “starfish “. I would call S2S, ask if you could buy it, try it on in your home and return if it just doesn’t work. You might also look at the Pro version, slightly more bulk and weight but a little roomier and more versatile. The folks there seem to be very knowledgeable and willing to help.

Take a real hard look at the Sea to Summit Sparc rated to 30f, also comes in a 45 and 15. Beautiful bag, stuffs to the size of a 1ltr water bottle. Fabric and down technology is,in my humble opinion, unmatched. I’ve been in the industry for many decades, owned and tested more bags than I can name. S2S bags are a well kept secret.

Sea to Summit Sparc. 30f bag that compresses to the size of a water bottle.

I have a couple of those bags, I've been in the industry for decades and S2S makes some of the nicest, tech-forward bags I've ever seen or used. Great little company, superb product and support.

Sea To Summit makes, in my opinion, the best warmth to weight/ bulk equipment on the planet. It’s not budget, but it’s not the most expensive line out there and they do occasionally have sales. Take a hard look at the Sparc line of sleeping bags.

Sea to Summit Spark 0° for cold trips. It’s lightweight, packs tiny, and still keeps me warm in sub-zero temps. Make sure it has a draft collar and insulated hood, they make a huge difference when it’s windy. Test it at home first to make sure you’re comfortable.

I had three of those bags in my house at the same time along with a panyam 450. The s2s was the -1 version. I was disappointed with my quilt for shoulder season temps so decided I wanted a bag. Comparing the loft side by side the WM was the winner and I liked the extra width being a bit bigger. If you are ok with the standard size of the xlite and the standard 3mm zip the xlite is a great buy. Ps as you eluded too the Sea to summit ratings are T lower limit ratings, the comfort rating of their -1C bag is 4C, the comfort of the -9 is -2C, #marketing

I’ve owned a couple of those Mountain Equipment Helium range sleeping bags and have been very happy with them. The 600 is the bag I tend to use for midwinter camps, and it has a great warmth to weight ratio. I wouldn’t say they shed feathers any more than any other bags I’ve owned (I’ve been camping for 35 years so I’ve owned a lot!). Between the Rab options, the Neutrino will probably be slightly cosier as the Ascent is a slightly roomier bag. I wouldn’t personally buy the Robens bag as 600FP means it’ll be a bulkier than the others. I personally just don’t buy any sleeping gear with less than 700FP. You mention needing a three season tent but I’d say these bags are all more winter oriented. Even in Scotland, where temps are a little lower than England, I’d say these are potentially overkill for three season camping. When I’m camping in Scotland outside of winter I actually often use a quilt or just my Sea to Summit Spark -1°C bag (I was actually using the latter just a few weeks ago in the Highlands). What sort of terrain are you usually camping on? Do you have any particular preferences for certain types of tents? You mention not using trekking poles so a trekking pole tent wouldn’t be an option but do you have any other particular preferences like free standing, or large vestibule, etc?