GTS Ventgard Side Window Deflectors allow fresh air to circulate through the cab of your truck in any weather, rain or shine. They also allow you to leave the window to be left slightly open to cool the truck in hot weather while parked. And if you have trouble with windows constantly fogging up, the circulating air prevents this from happening. With all these benefits mentioned, GTS Ventgards will look great on your Tundra as well.