Finally last year I decided to get the probably one of the craziest/coolest sleeping bag construction I’ve ever seen in my life. I mean before I’ve only owned a -6c synthetic sleeping bag which was really great for bikepacking but it was in the end too heavy to bring around. So I got this sea to summit spark pro -1c. Even though I’ve had it for a while, I haven’t used it much, because I was so busy with my master’s thesis.
Finally, I took my sea to summit spark pro -1c outside last week and yesterday. Last week the temperature dipped just under 10c whereas yesterday it was mostly around 5c. Since the bag is rated for comfort around 3c, I wasn’t sure whether it would be too warm or too cold since I’m leaning towards a cold sleeper (sleep better in a colder situation). Since this is also my first down bag, I’ve decided to follow some advice, by using a liner to reduce dirt/oil. On aliexpress I found an ultralight liner that weighs just under 150g, which is unbelievable. It’s so thin that I don’t think it helps with warmth at all.
- Can use it as a quilt (blanket), instead of mummy shaped bag
- Can open the footbox with the zipper especially if you’re overheating, this is basically a godsend as you can ventilate yourself
- Can make you homeless (jk…. or no)
Anyway, last week at 9c, this bag as a quilt with the liner was unfortunately too warm for me even with the tent door open. Unrelated to that, there was some condensation inside the tent and I got some droplet on the sleeping bag, but the water droplets beaded and didn’t penetrate. I think I had a bad pitch
Yesterday, at 5c, this bag as a quilt worked really nicely. I felt warm and cozy. I closed my tent because it rained. Was so lucky there was no condensation this time even though it had rained through the night.
Paired with Exped Dura 3R, this sleeping bag performs really well. Bonus clips, when we were there, we saw a big fat nutria (I thought it was a beaver at first, but due to its long and pointy tail, it definitely was not a beaver). pretty cool.
