The Softie Expansion sleeping bag has a unique expanding system called the EEP (Elasticated Expander Panel). 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 nights sleep.
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