I've been following the recent helmet thread and am thus thinking seriously about getting an Uvex helmet. However I'm a bit confused as to what type of buckle the recommended model (Wing RS) has. According to the thread here it has a set-belt type buckle but according to the Uvex web site the Wing has a double D-ring. Can anyone clarify this for me? (The web site is German so I'm not absolutely certain about my informnation from there)