Indiana Jones is famous for his trusty bullwhip. A long strip of leather, Indy has used it hundreds of times throughout his adventures. It can be used for pulling levers, swinging over chasms, or simply smacking a Nazi across the cheek. It takes a great deal of skill to use a whip, as it has a tendency to snap the wrong way, resulting in an inexperienced wielder beating himself half to death. The first time Indy uses a whip in-universe is in the Last Crusade prologue, when he is trying to drive off a lion.
David Morgan is credited with creating the whips used in the trilogy. Over thirty whips were supplied for the films, ranging from 6 feet to 16 feet. The most commonly used whip in the film was the 10 foot one, with the others being used for stunts. The whips were from David Morgan's 450 series, and hand braided with a kangaroo overlay.
Indy's whip was made with a core of twisted leather, then a plaited belly, then a bolster, then another plaited belly, then another bolster, then the final 12 plait overlay.