Will this bag work in a hammock? And does...
Will this bag work in a hammock? And does bag has a storage case to put it into? And how big is the bag when stored in bag?
Yes, this bag will work in a hammock, but you might want to try the model with the more water repellant "Membraine" shell. Marmot includes a nylon stuff sack (but you'll probably want to replace with a compression sack) and a cotton storage sack. When stored in the storage sack is approximately the size of a medium-big cooler.
I use mine in a hammock and it's great! Just use a sleeping pad with a decent R-value for insulation since the part of you that presses up against the hammock is more prone to become cold (same as if you didn't use a sleeping pad under you in a tent, the ground would keep ripping away heat). I use a Thermarest Trail Scout (R-Value of 3.7) and I never get cold. Highly recommend!