3lbs, oh my aching back. Now I know how my mules felt packing in a period cowboy bedroll of 6' x 18' canvas, 3 quilts and 4 wool blankets. Again, we buy a knife because it is sharp, not because it has titanium scales and wieghs a few ounces less. Sleeping bags retain warmth. They do not generate it.If you think a shower curtain as carried by a famed ultralight dayhiker is adequate get a shower curtain.If you want to be warm buy insulation, which means a measured amount of loft. I use Wiggys.I compensate for that brutal 3 lbs. by cutting the handles short on my toothbrush and copyright notices on my maps.