Slalom ski size is driven by your weight, your boat speed, and your skiing style. As a rough guide: 60–75 kg riders land in the 65–67" range; 75–85 kg riders typically need 66–68"; 85 kg+ usually need 68" or longer. Faster boat speeds run shorter; wide-body skis can shorten the recommendation. Use the calculator above for a specific recommendation.

Faster boat speeds generate more lift, so the ski needs less surface area. At 36 mph (tournament speed) a 75 kg skier might ride a 65" ski; the same skier at 30 mph (social speed) would want 66–67" for the same comfort. That's why the calculator asks for your skiing style first — it's the clearest way to estimate the boat speed you ski at.

When you can comfortably drop one ski mid-run on your combos and ski on the remaining ski. That's the practical signal. Most riders make the move once they can hold a confident edge on one ski for 30 seconds without losing balance. Before then, stay on combos and work on the drop. See our [Combo Ski Size Calculator] if you're still picking your first pair.