Methods to keep sun from fading leather

I have a lot of windows in my house. Even though I have 2" blinds on them, what other methods can I use to keep the sun from fading my leather furniture? What about the window films that you can buy at Lowe's? Are there any particular brands that are recommended?

You can use a Solar Film on the windows (I have mine in my house done professionally), Leather Magic makes an SPF 80 sunscreen spray you can apply to the leather, and you can also simply put a throw on the back of the sofa or chair when not home so that gets the sun instead of your furniture.