The Big Agnes Pitchpine 40 Sleeping Bag is the lightest Big Agnes Sleeping Bag around.If you were to use the Big Agnes Clearview Mummy pad and Pitchpine together youd have a combined bag and pad weight of only 28 oz 1 lb 12 oz! The Pitchpine achieves this weight by using 800 Fill Goose Down, a mummy shape and ultralight fabrics.The Big Agnes Pitchpine uses a mummy pad in either the long or regular length.For a true ultralight setup, check out the Clearview Pad or Air Core Pad.