I took my new Snugpak Stratosphere bivvy bag out for a test run on a rainy September night in the UK.
The results were disappointing – damp, cramped, lack of storage, lack of practicality without also having a tarp, and with the flaps zipped closed lack of oxygen that had me panting!
So OK I could have pitched it under a tarp, but if I had a tarp I’d rather sleep in a hammock.
This is probably pitched more as an ultralightweight piece of kit for hiking, or an emergency 1 night shelter. Quite rightly so, because it doesn’t offer the comfort or practicality of a tent or hammock system.