According to the Everton website:
Following the popularity of last year’s vanilla jersey, the Blues have again opted for a fashionable light shade for this season’s offering.
The glacier marl jersey, teamed with navy shorts and glacier marl socks with a navy trim, will be the change kit for selected away fixtures throughout the 2011/12 season.
The striking jersey features a vintage grandad-style collar and is made from the same lightweight fabric that has been developed for the home and away strips.
The Toffees will wear it for the first time in the away match against Chelsea on 15 October.