The L means Long distances, Less pressure on the legs, and perfect Lift => The CHR L is the most versatile version of the CHR. It's a neutral fin with a balanced ratio of power, glide, and control. In strong winds, it will stabilize the board's attitude both laterally and longitudinally, which is particularly beneficial in small sizes and when the water is rough. In its large size, it provides strong support from low speeds, allowing the board to remain firmly flat above the water. Due to the stability of your trim, you are comfortable in all directions, from close upwind to wide reach, and in all conditions. Sizes available from 22 to 48