I'm 5'7"  160lbs and I made it to fit me perfectly. Measures about 75" in length.

Tapers down from 36" at the opening, to 19" at the foot box. 

Weighs under 14 ounces and packs to the size of a Nalgene bottle.

Drawstring closure at the top and foot box for venting.

Sewn through design to reduce weight.

Made to be used with a sleeping pad(although that's probably obvious)

Price reflects the money I put into it.  I used only high quality, light weight material.  The shell material is water resistant, downproof .75oz/sqft nylon with a high 900 fill power goose down with an appropriate amount of overfill.