Excellent condition! 900 Down Fill Jacket At under nine ounces, the ridiculously warm and lightweight Quasar is a modern marvel. Ultralightweight, DWR-treated Pertex ® Quantum ® shell fabric and the best 900-fill down available give this jacket an unbelievable warmth to weight ratio and compactibility that's next to nothing. Stuff the coat into its own zippered chest pocket for fast and light packing