TIP-ROCKER: For high performance all-mountain freeskiing, the combination of an early rise tip and a classic camber profile in the rest of the ski provides an easy, smooth turn entry regardless of snow conditions. In the softer snow the ski is incredibly forgiving, floats better, and requires less energy to ride. * PROGRESSIVE FLEX: At the tail, the ski"s profile becomes very thin in the middle - torsionally soft for the last 7 cm, allowing the skier to exit the turn at will. The ski accelerates less aggressively out of the turn to help prevent the skier from sitting in the proverbial "back seat". The skier can make better turns with less effort. * PROGRESSIVE EDGE: Progressive edge utilizes an early rise concept in the tip of the sk. Bringing the widest part of the ski up a little higher ensures easier directional stablility, and the tip only engages when the ski is on edge, adding to the skier"s comfort level. * XTD TRANSMISSION: The mid-range RTM models follow a similar construction philiosophy as the 84 and 80, although the reinforcement is somewhat less pronounce, giving the ski a more relaxed ride quality, while still "keep up" as the skier improves.