Patizon G400

The Patizon G400 is an ultralight three-season down bag filled with 850 cuin European goose down (90/10 ratio). Weight starts at 671 g in the smallest S size, while the regular size listed in the catalogue weighs 719 g. ISO EN 23537 testing gives a comfort rating of -1 °C, a limit of -6 °C, and an extreme of -24 °C. The shell is recycled Toray Airtastic nylon with a PFC-free DWR finish; a differential cut and two-way zip keep the down close to the body while still allowing venting. An adjustable anatomical hood, insulated draft collar, sleeping pad loops and an internal pocket are standard. The down is RDS-certified and the bag is made in the Czech Republic. Maximum recommended user height is 185 cm. The G400 is a balanced choice for spring and autumn trips and cooler summer nights at altitude — aimed at a low base weight while keeping a margin below freezing.