What Is This?

So we got my son the Justice League underwear pack at the store. All the underwear was obvious as to which super hero was portrayed except this one? I've never seen this sympbol before. What super hero is this underwear of?

(EDIT: Apparently, it's Aquaman. Rish tells me that the V symbol there is actually an A, like the one he has on his belt. If so, they did a terrible job with the design of the underwear. It could've at least been orange and green).