I believe the mystery is solved!
The glasses Kevin wore in the Spring/Summer 2013 issue of Fashionisto magazine are from the Mykita brand, based in Berlin.
I think these are probably the sunglasses Kevin is wearing! They’re called “Janis”
I also think another style called “Tuuli” could also be the one he’s wearing, but I’m not as sure.
What do you guys think?!?!?