An oversized beanie cap....or whatever you wanna call 'em.
(Note: I'm purely just citing the photos. The gray beanie is selling for $77 on their web site. I WONT be buying that one. You can find these sort of caps at thrift stores for mere peanuts. $77 for a beanie...ridiculousness....wtf are they thinking...*mumble mumble mumble*)
Effortlessly cool, eh?