There are far more down-filled sleeping bags to compare than those shown below, so if you know a particular brand that you're interested in, type it into the search box above plus the words 'down fill sleeping bag' for better search results. Unfortunately most sleeping bag descriptions include a phrase such as '...stay warm down to -10...', so synthetic filled bags also appear in any search using the word 'down'. Which means you need to read most of the descriptions. Aaaaaaaagh.
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#0 /homepages/5/d139665346/htdocs/e-eagle-eye/classes/class.php5Client.php(57): SoapClient->SoapClient('http://v3.core....', Array)
#1 /homepages/5/d139665346/htdocs/e-eagle-eye/classes/class.php5Client.php(95): Php5Client->__construct(Object(stdClass))
#2 /homepages/5/d139665346/htdocs/e-eagle-eye/classes/class.ClientFactory.php(59): Php5Client::getInstance(Object(stdClass))
#3 /homepages/5/d139665346/htdocs/e-eagle-eye/pics_query_class.php(58): ClientFactory::getClient()
#4 /homepages/5/d139665346/htdocs/e-eagle-eye/pics_query_class.php(374): __get_piclinks->smarty_class()
#5 /homepages/5/d139665346/htdocs/e-eagle-eye/wp-content/plugins/php-execution-plugin/includes/class.php_exec in /homepages/5/d139665346/htdocs/e-eagle-eye/classes/class.php5Client.php on line 57