Spark Ultralight Sleeping Bag

The 45° S2S Spark is a lot more expensive but it compresses to 2.4 L. https://seatosummit.com/products/spark-down-sleeping-bag

Only thing I can comment is I have the 0F spark and its very good, though overkill for your use. I use it for winter outings

Spark 0 is great. Used it down to 8F this winter and was still toasty warm

i feel you on the gear hunt for a trip that big. for those temps and your height, look at the Sea to Summit Spark SpI sleeping bag - packs tiny and goes to -1°C comfortably. pair it with the Therm-a-Rest NeoAir XTherm sleeping pad, that combo handles cold and wet really well. both are super compact for bikepacking and should fit your 187cm frame. the Spark comes in a long version too. i've used similar setups in norway and denmark in september and stayed warm enough

Hey everyone, I want to get into backpack hiking in Australia (Victoria) mostly in summer and spring but want the option to go in Autumn too. The weather here is not too cold but can get around 0*C during the night. I am 6’6 (1.98cm) and find that most sleeping bags are too short for me. I tried the Sea To Summit Spark which is just too tight. I consider looking at a quilt (which is usually lighter too as I understand) but I am concerned they do not provide the same warmth unless you have a really expensive mat too. The Sea To Summit Ember seems like a reasonable option but is only marked as a 2 season on their website. Does someone have a recommendation on either a sleeping bag or quilt? Budget is not set in stone yet but given that I am just starting I am not really looking at the top end A$700 bags.

I’ve got a Sea to Summit Spark II, which is excellent - I’ve used it for random tramps, and bikepacking events like the Great Southern Brevet, Kiwi Brevet, etc. One night, we had torrential rain and snow come through, and I was fine in the bag (this was in an open fertiliser shed/lean to in Central Otago) OGR has huts, so minimum temp isn’t such a problem, and if you’re looking for a good 3 season bag, something similar to the Spark II would be a good bet (they’re no longer made, from what I can tell). Mine is ~10 years old and just as good as the day I bought it, which is why I recommend the brand. Also worth looking for a decent sleeping mat - it’ll make as much difference as a good bag, if it’s insulated. I use a mummy shaped Exped mat, rolls up about the size of a bidon and weighs ~400g. IMO it’s worth investing in a good sleep system, I’ve had my stuff long enough that it has cost $100/year at this point.

I’ve had my Sea to Summit Spark II for a decade now and it has served me well. I also run cold and hate cold camping (anything under 35F, I’ve camped in 19F in the past and nah, I’m good). It is definitely ultralight with an exceptionally small pack size! In tandem with a silk liner, my “camping” puffy jacket that’s not so puffy because it’s lost half its feathers and therefore packs down smaller, thick wool socks that are *only* for camp, and some thick cashmere joggers and I’m good to go for 30-40F. 99% of my camping is by way of bicycle, so pack size is the ultimate make or break attribute to my gear selection.