They plan to design one shaped like a triangle for pure crack climbing and another with less downturn for more slabby conditions.

FORBES: Design A New Foot If The Shoe Does Not Fit -- Laser Sintering a Prosthetic Leg

When you - you're crack climbing a thin crack, you stick your toes into the crack and then kind of wrench down on to stand up, and it's painful.

NPR: Craig DeMartino: Winner in the Extremity Games

Mr. DEMARTINO: Well, particularly at crack climbing.

NPR: Craig DeMartino: Winner in the Extremity Games