Moby Sculpin
FNG
You’ll pry my Nalgene out of my cold dead fingers! While hiking my rifle (or camera, for that matter) around the woods I carry a 3L bladder of water and a Nalgene of electrolyte mix that I sip throughout the day. Just before bed, pour that empty Nalgene full of boiling water and put it in the foot of the bag…it’s FANTASTIC!! If the temps drop and you wake up cool, pull that warm bottle up between the femorals and let it warm your blood. Adds 10deg to your bag with nothing else to futz with.