I bought this new from REI Co-op.  Its a great bag, no complaints.  I didn't realize until I was on a camping trip that the zipper was on the wrong side for me.  So I'm replacing this before the next one.  Its been slept in 5 nights and has been stored outside the stuff sack at all other times.  

Tech specs from the internet:

Tech Specs

Material
polyester
Insulation
MountainLoft Hollow Fiber
Shape
mummy
Zipper
full-length
Max User Height
6ft 4in
Shoulder Circumference
65in
Hip Circumference
62in
Foot Circumference
40in
Bag Length
80in
Draft Tube
full-length
Fill Weight
2lb 4oz
Degree
20F
Stuff Sack
included
Stuff Size
9.5 x 15in
Claimed Weight
3lb 9oz
Recommended Use
backpacking
Manufacturer Warranty
lifetime