Zpacks 30f Classic Sleeping Bag

The Zpacks 30f Classic Sleeping Bag is the lightest bag in the hoodless Classic line, rated to -1°C (30°F) and starting at 347 g in the Short/Slim size. It is filled with 220 g of 900 fill-power duck down, and the tapered cut combined with a 3/4-length bottom zipper trims further weight compared to a full-zip design. With no hood, draft collar or draft tube, this is a stripped-down build meant primarily for summer nights with minimal chill, where a hat or an extra layer covers any unexpected cold snap. The 0.51 oz/sqyd Ventum Ripstop Nylon shell with DWR finish handles light moisture, though the down itself is not treated hydrophobic. This is a classic summer ultralight bag for trips built around a minimal base weight, where -1°C is enough margin and the user accepts the reduced comfort of a hoodless, simplified design in exchange for the lowest possible pack weight.