Yeti International Fever Zero Sleeping Bag 59 Degree Down

Weighing in at nine ounces, the Yeti Fever Zero Sleeping Bag might just be the lightest bag on the market. Its Crystal Down insulation certainly has the highest fill rating 900 available, which means the Fever Zero has the highest loft and lowest weight. A comfort temperature of 59F makes the Fever Zero applicable for summer backpacking trips and shoulder season camps in the desert. Yeti wrapped up the Fever Zero's ultralight insulation with an equally light Next to Nothing shell, which is lighter than strands of human hair and is still water repellent and down proof. This bag also features an adjustable hood and half length zipper so you can open the bag up for warmer temperatures, or batten down the hatches when things get chilly.