Cumulus the Quilt 600

The Cumulus the Quilt 600 is the winter version in Cumulus's quilt lineup, built around 600 g of goose down rated at 900 fill power, 96/4 down-to-feather ratio. The fill sits in 43 horizontal H-baffle chambers that resist shifting and keep insulation even. A comfort rating of −7 °C and limit of −14 °C put this quilt firmly in winter territory. Its weight-to-warmth ratio of 57.5 g per degree beats the lighter models in the same range. Total weight of 805 g is reasonable for this class, and the 19 g/m² Toray Airtastic 7D ripstop shell with DWR sheds moisture from outside. Internal length of 195 cm with a 65 cm shoulder and 50 cm hip width fit the regular size, suited to users up to 185 cm tall. An open foot box with a venting zip lets you dump heat on warmer nights, and two pad-attachment straps keep the quilt from sliding off. A stuff sack and storage sack are included — a quilt for winter treks where weight still matters at sub-zero temperatures.