Kelly Slater's mind and Kelly Slater's board bag are two of the most interesting places in surfing, and naturally they are intimately connected, one seeming to flow almost imperceptibly into the other. In this interview courtesy of the WSL Kelly unzips both of them and gives us a peak inside, chatting to old mate and regular in the commentary booth Ross Williams. Topics include the finer aspects of surfboard design, how the shape and size of his boards have changed over the years (in the 90s he used to ride boards just 17 1/8" wide), his recent acquisition of Firewire Surfboards, sustainability and environmentally friendly practices in the surf industry, and his own various plans for the future.