Core Bed (XL, 25° Synthetic)

+3 for Zenbivy. I am rotisserie chimkin. I will say - I started out with a Nemo Forte spoon-shaped bag and it did not work for me. It was still too narrow to rotate, and I got suffocated by the draft collar thing all the time. If you have access to an REI or similar, test the Nemo out in store. An alternative might be to buy a Zenbivy sheet and the adhesive clips to pair with a quilt that might be more affordable in Canada.

I have the core quilt with clips. They work just fine, but If I had to do it over, I would probably get the zipper, because it seems easier to dial-in and because the clips can be a bit finicky in the dark and when my fingers are cold, stiff or numb (carpal tunnel problems).

I have a feathered friends flicker 30 degree and lark 10 degree. Those cover all my bases. I do have a zen bivy 25 which is nice but heavier.

ZenBivy is a game changer!!! The whole set, including pillow, not necessarily their mattress, keeps me snuggly and everything in place while I toss and turn, but I can stick my arms/legs out in warmer weather.

Any thermarest bag is a good start and I've just tried out the ZenBivy and so far absolutely love it. Would also say that a good sleeping mat goes a long way to keep you warm. You could have the best bag for the cold but a weak mat can undo all the work of a good bag!

I have a zenbivy and I love it. Don’t know what their lowest temp rated bag is though

Agreed. As a thrashing side sleeper this bag has been a godsend. It’s super versatile

Zenbivy - best of both worlds! I have the 10f and 25f light beds and they're super comfortable.

They’re constrictive and you get twisted up inside the lining if you move in your sleep. Zenbivy came up with the solution to this and other problems.

Zenbivy is the best of both worlds. Most comfortable camp sleep system ever IMO.

Sierra Designs has or had one recently. I tried it out but didn't like it much and ended up going with a Zenbivy which is exactly what I hoped it would be.