The Softie® Expansion sleeping bag has a unique expanding system called the EEP (Elasticated Expander Panel), this allows the user the option to make the bag wider when required. You can do this to give yourself more room to move or to help cool the bag allowing you to regulate your body heat for a more comfortable night’s sleep. The Softie Expansion 4 also features Reflectatherm, a metalised fabric which is deigned to reflect heat and retain warmth. It is a highly breathable material, which adds little weight to the packsize of the product and provides at least 15% of additional warmth whilst being undetectable by touch in the sleeping bag or garment. Weight: 1850g / 65oz Comfort Rating: -10°C / 14°F Low Rating: -15°C / 5°F Packsize: 28cm x 24cm / 11" x 9" Outer Fabric: Paratex Micro 100% Polyester Inner Fabric: Paratex Light & Reflectatherm 100% Polyester Insulation: Softie® 100% Polyester Built-in deployable side baffle, to allow for more room Adjustable length via foot shorting clips Incredibly soft thermal suede foot lining Built-in LED torch Elasticated drawcord-adjustable hood Internal valuables pocket with hook & loop Two-way YKK® side zips with insulated baffle behind Anti-snag zipper webbing tape Internal drawcord foot loops to attach a sleeping bag liner Supplied with a compression stuff sack for easy compact carrying Webbing tabs on the bottom of the sleeping bag to allow for easy airing and drying Size Guide Standard: Length: 220cm / 87" Chest width: 70cm / 31" Knee width: 60cm / 24" Foot width: 42cm / 17" Max user height: 205cm / 81" With built-in baffle deployed: Length: 220cm / 87" Chest width: 92.5cm / 36" Knee width: 72.5cm / 29" Foot width: 42cm / 16.5" Max user height: 205cm / 81"