One of a kind (OOAK) skeins are non-repeatable colorways. Often these are the result of experimental dyelots during the development of new colorways, in stock colourways that didn't turn out quite right and yarns dyed to use up leftover dye stocks. These skeins are beautiful and perfectly functional yarn, they just aren't perfect enough to sell as a standard colourway, so I am offering them at a discount.