One surefire way to stay cool during the summer is to rock something without sleeves. While the tank top is the de facto choice of bros and stylish guys with passable arm definition, don’t underestimate the power of a dope vest.

Big Sean knows this all too well. The Detroit rapper performed in London during the Yahoo! Wireless Festival wearing a Maison Martin Margiela vest pieced from a various military patches, and he layers it over a Rick Owens sleeveless shirt. He definitely has keen eye for fashion, it’s no wonder he has the beautiful Naya Rivera standing by his side. Get your guap up, the vest might be on sale, but it’s going to cost you $799 at Barneys.

[via Upscale Hype]