The latest in a string of masterpieces by rock shoe designer Heinz Mariacher, the Boostic is a professional tool intended to perform at the highest levels of the sport, in vertical to overhanging terrain where precision toe power and edging is crucial. Because of its stretchable, sock-like upper, the downturned Boostic slips on snugly, and can accommodate a wide variety of foot types for a precise fit. The two hook-and-loop tab closures augment the structural integrity, securing the foot for high power performance, yet simultaneously retaining slipper-like sensitivity for more delicate moves. Mapping Microssuede and leather into different areas in the uppers creates a shoe designed to work with the foot, allowing dynamic movement while climbing, and also maintaining the shoe’s precision fit over its lifetime.