User Review: Eureka! Men's Casper 15
Price Paid: Can't remember exactly, $70- 80 on sale.
There are some good things about this bag, primarily its light weight, seems to be well constructed, and has a nice stuff sack.
I can only give it two stars however, because its +15 temp rating is a fantasy. The true rating in my opinion would be closer to +35.
Last January the forecast called for temps in the mid-teens, so I set up a tent in my back yard, and tested the Casper. I wore wool socks, poly long johns, merino wool top, and a knit hat. Also had a thermarest pad. The temp did drop to 16. By the middle of the night, I was so cold my teeth were chattering.
Safety was as close as the back door, so I stuck it out for the night. If I was in the field, I'm sure that I would have had to get up and stoke the fire.
Another bad feature, is that your body moisture is wicked away (a good thing), but the moisture is transported to the foot of the bag. The foot end of the bag is sopping wet in the morning. I lent the bag to a friend recently who said the same thing happend to him.