Midsole component to curb overpronation and improve fit (adidas).
Low-density foam pad for forefoot cushioning (Avia).
The back part of a shoe upper from shank to heel. This may include only the back part below the vamp line, as in a shoe having a three quarters or circular vamp; or it may include the entire back part of the upper from top edge to sole and from shank to heel, as in many types of low cut shoe.
Encapsulated, semi-solid silicon-like substance (ASICS).
Matrix of synthetic strands to absorb shock, like a tennis racquet absorbs and releases shock from a ball (Saucony).
GRID Toe Off; forefoot cushioning system (Saucony).
This is a combination of natural rubber and synthetic rubber. It is easily identified by its natural tan color. Gum rubber is soft and provides excellent traction on all indoor surfaces, but is not meant for outdoor courts. Its use is usually limited to indoor court play and volleyball shoes.
The back part of any covering for the foot. Usually it refers to the solid part projecting downward from the back part of the sole of a shoe.
High-performance rubber (Brooks).
Divided chamber filled with liquid silicon oil to flow from chamber to chamber under pressure of impact (Brooks).
Internal Cell; Hexagonal polyurethane cells of varying size, with a slower rate of compression or breakdown than foam (Puma).
Impact Guidance System; integrated cushioning and stabilizing technologies engineered to improve the shoe's ride (ASICS).
Process that injects ethylene vinyl acetate foam into molds, which makes it a bit more uniform and durable, but is difficult to control as it continues to expand after the injecting process.
Leather (or a related material) which is cut to conform to the size and shape of the bottom of the last. The upper and welt and the outsole are attached to the insole.
Independent Suspension Network; articulated lugs to allow shock absorption (Timberland).
Specific recipe for EVA that is of predictable quality (Puma).
