The Enlightened Equipment Conundrum is one of our recommendations for backpackers who want to experiment with the features of a quilt without sacrificing the need for a full-coverage sleeping bag. The Conundrum features a 3/4-length zipper that can be opened up and placed underneath you, while the pad straps keep the bag secured to your sleeping pad. It’s also a versatile choice for those who generally like using a quilt but want that extra little bit of insurance to zip up on the coldest nights.