The Softie Elite Series has a number of extra features, mainly the EPS (Expanda Panel System). When the EPS is not needed, it is an extra thick zip baffle helping to keep out those unwanted drafts. When extra room is needed simply deploy the EPS and zip it together with the zipper of the main body. The EPS provides an additional 5 inches of extra space. The smallest sleeping bag in the Elite range, this lightweight and low pack size unit will fit into even the most space restricted rucksack or even tie discreetly to the outside. This Elite bag is equipped with our unique easy to deploy EPS Expanda Panel System and its own sturdy compression stuff sack. A layer of our exclusive Reflectatherm metalized barrier helps to reflect heat back inside. Features: Expanda Panel System - Provides an additional 5 inches of extra space Compression stuff sack Draft Collar / Snugfit Hood Anti-Snag Two-Way Zipper / Zip Baffle Reinforced Foot Lining Hanging Dry Tabs Temp Range (Comfort / Low ): 45AdegF / 36AdegF (7AdegC / 2AdegC) Weight: 35oz (1000g) Dimensions: 87 x 30in + 5in EPS (220 x 75+12.5cm EPS) Pack Size: 9 x 6in (22 x 16cm)