Rae Sremmurd is a US hip hop act, comprised of two rappers, Swae Lee and Slim Jimmy.
This is them.
[youtube]https://www.youtube.com/watch?v=p2cQSPRTdhg[/youtube]
And it appears that, with the launch of a new Captain America with Sam Wilson in the lead, that a special variant cover featuring them and the good Captain, via their label Interscope will be sent free[...]