Vario Fixed Harness Lines:No need to remove the boom end--just 10 seconds to get them set up. Thick rubber loop pull for quick shortening of lines in light winds--wide enough to fit 3 fingers for adjusting in full-speed position. Clap cleat for easy and fast lengthening of lines--perfect for extra comfort in stronger winds. Low power required to change length in the cleat--no hassle, just efficiency. Lines stay in place--no swinging around. Sizes: 22-28, 24-30, 26-32, 28-34, 30-36.