Crua Outdoors Camp & Hike Mummy Sleeping Bag Green MSB23. The mummy sleeping bag has fantastic dimensions that can easily fit the tallest adult inside. Crua’s mummy sleeping bags / bivy width ensures the broadest shoulders can fit inside comfortably. Staying warm in harsh weather conditions is a priority which is why we designed this sleeping bag to withstand minimum temperatures as low as 41f (5C). When youre camping having a lightweight sleeping bag is essential and thats what the Crua mummy sleeping bag offers not only is it super lightweight but it wont take up much room in your backpack which is thanks to the compression sack.