Comfort Blend Sleeping Bag Liner

Probably not. The Comfort Blend liner is heavier and bulkier than most backpackers would want - a Breeze or Reactor would be better choices

Yes - any extra layer traps insulating air, so it will add some warmth. If you are looking for a thermal boost, check out the Reactor liners

The liner is impregnated with bio-based amino sugar polymers that absorb and neutralize odors. When the liner is washed, the compounds that cause odor are released, and the polymer is ready for the next use

To keep the liner reasonably light and compact for travel, it does not have a side zipper