We got this since my SO get cold at night, and its nice to be able to share heat. The sleeping bag is super warm, and is of high quality. The two zippers on the opposite sides make it very convenient to be able to get in and out of the bag without disturbing your partner, and to provide ventilation if one of the partners is hot. The only downside is the narrow bottom part of the bag doesn't allow for moving your legs around too much. It might be worth the couple extra pounds to get the square version of the bag for those who like to sleep in a non-straight position.
This review was written in the old system and had content requirements that are different than reviews written today.