Since 2007, Toyota has maintained 3 body styles for it’s full-size pickup truck, the Tundra. Those are the Regular Cab, the Double Cab, and the Crewmax.
The mid-sized cab version, the Double Cab, appears to be a suicide-style reverse-opening door (probably because of its vertical styled door handles, which are initially difficult to spot), but in fact it does open and function as a standard opening rear door.
Despite the very subtle body style change in 2014, practically nothing has changed in their cab styles. This makes the Tundra’s cab lineup one of the easiest to understand.
From 2000-2003, the Tundra’s Cab lineup consisted of the Regular Cab, the Access Cab, and then in 2004-2006 they also offered the Double Cab which was their full four-door version.
The fact that they renamed their mid-sized cab for 2007 (“Double Cab”) with the same name as their largest cab from 2004-2006 (“Double Cab”) can cause some confusion.