LL is the extra-large or largest size. These cleats came M, L & LL. Selecting the clip solely based on shoe size is not necessarily helpful, as the clip size can vary depending on wheter it is a cycling shoe or not and in the case of the former, your preferred cleat and strap position. Fortunately, the Shimano system allows for about 3/8" fore/aft adjustment which helps quite a lot. FWIW, I wear typically wear a 10.5 cycling shoe and have the L clips on one bicycle and find them marginal even at there most forward position.