It's surprising that Therm a Rest's Antares HD Sleeping Bag barely weighs over two pounds despite its innovative insulation, protective shell, and convenient features for ultralight backpackers and campers alike. Therm a Rest's Zoned Insulation pairs light and lofty 750 down treated in Nikwax's hydrophobic coating with a sewn through insulated bottom that maximizes thermal efficiency and minimizes weight. Therm a Rest also equipped the Antares HD with a water resistant shell to shed moisture, and the ThermaCapture lining that reflects your own body heat back to you for a boost of warmth. SynergyLink connectors slide your sleeping pad through so you never roll off again. The Antares HD also features a cinchable hood, draft blocking tubes at the collar and full length zipper, a zippered external pocket, and included stuff and storage sacks.