Surfers were popularized in the 1960's in Southern California. These laid back dudes were listening to 50's rock and beach pop such as 'The Beach Boys' and living a carefree, relaxed lifestyle.
Fashion affiliated to surfers are usually casual clothing inspired by surf culture.. dyes, colour, beads, shells etc. Wearing typical brands such as Quicksilver (Huntington Beach, California), Roxy (Huntington Beach, California), Billabong (Australia), O'Neill (San Francisco/ Santa Cruz) Rip Curl (Australia), Hollister (California). All these brands based in locations of evident surf culture. 
HANG 10........... what?