Spark series sleeping bags are extremely light and packable. This is achieved by using extremely high class fill down and lightweight surface fabrics, and all unnecessary details have been pared out. A great choice for those who value light weight, including hikers and ultra endurance sports enthusiasts! - Regular size: suits max. 185 cm users - Amount of down: 305 grams - Half-length side zipper with draft tube - Ergonomic footbox - QuiltLock system: the bag has attachment points for compatible Sea to Summit quilts The surface fabric is treated with a PFC-free DWR substance.