Wiper blade size

[Twixxy_1989]

Looking to replace my wiper blades and I've been looking around at a few places and noticed there's different sizes for the front. I've got a choice of 21" + 18" or 21" +21 which ones would be the best size to get?

thanks

 

[Matt e]

21 + 21

 

[Twixxy_1989]

Cheers for that, didn't want to end up buying wrong size