The Traverse™ transitions easily into warmer weather with a full-length left-side zipper, a half-length right-side zipper, and a foot box zipper provide that unparalleled ventilation or allow the Traverse to be opened completely flat like a comforter. In colder weather, the unique WaveLoft™ construction allows the Thermolite® insulation to expand out into air-trapping curves for maximum warmth.

Whatever the season, the wider mummy cut of the Traverse gives you room to move, no matter what position you sleep in.