The ideal temperature for this sleeping bag is +2 C. The limit temperature is -3C, where a hiker in good condition will sleep without waking up in the cold. The extreme temperature is -20C and it tells you the temperature at which the user will survive for a few hours without suffering from hypothermia.
Material: Main fabric: 100% polyester; 50D 300T Ripstop; Lining: 100% polyester; 50D 300T; Filling: 100% polyester; Sensofiber.