So check this site out
http://www.bulkyboy.com/ I dont think they have any vests but all there clothing is extreme sports wear and they sponsor all kinds of people from surfing to mma there pretty cool if you cant find a vest but your a bigger guy you might enjoy some things they do have ( they have sick rash guards and swim shorts ) , whats really funny and a original idea is for there "sizes" there logo is a man with neck rolls and the neck rolls increase as the sizes do haha