"Osprey 30F bag - long
fabric: Nylon taffeta
fill: 800 fill (2oz overfill)
weight: 34 oz
cost: $297
me = 6ft, 180lbs, warm sleeper.
The bag is advertised as 27oz, with pertex quantum fabric (0.9oz/sqyd) and a half length zipper. Mine was heavier due to the long size, nylon taffeta (1.3oz/sqyd), full length zipper, and 2oz extra down.
pros: Very well made. Not too confining. It has just enough room for an extra lightweight jacket. Lots of loft. Temp rating is 25F with the 2oz overfill. I felt very comfortable with only a baselayer on at 25F. I could stretch it to 20F with some extra clothes.
cons: zipper snags, though it's always been easy to unsnag. The hood is adequate but not the greatest."