I made this hat a while ago too. I think around February / March time, after I'd finished Zelda and emerged blinking from the lounge into daylight for the first time in a while. The yarn had that sort of spring sunset feel about it which I liked. It's from Natural Dye Studio on ebay - can you believe all those nice bright colours are sourced from plant extracts?!? It's just trinity stitch, knitted in the round, with a bit of ribbing at the bottom. I stole the idea off craftster. The yarn is DK weight so my nobbles are a bit smaller. It kind of looks like those old skool swimming caps, like on the cover of Leisure by Blur.