Therm-a-Rest packed the Questar Sleeping Bag with the most innovative features for perhaps the comfiest camping experience of your life. Down insulation keeps the bag light and lofty, and Therm-a-Rest treated the down with Nikwax to retain its lofty warmth in moisture-riddled environments. Thermacapture seams reflect your own body heat back to you for extra warmth without adding weight. Therm-a-Rest also added removable SynergyLink connectors so you never slip off your sleeping pad again, and the Toe-asis footwarmer pocket rapidly warms numb toes.