Equipment
Ski jumpers wear specially designed aerodynamic suits, gloves and obligatory helmets. The ski suit is only allowed to be 5mm thick, limiting the amount of trapped air inside the suit and reducing the advantage this gives in lift and distance.
The length of the skis are permitted to be the height of the jumper plus 80cm. The bindings must be placed so that the distance from toe to ski tip is no more than 57% of the total length of the ski.
The underside of the skis have a groove to keep them straight down the in-run. The skis are also hollow inside and than their alpine counterparts to allow more life in flight.