Kevlar

Kevlar
A synthetic fiber manufactured by DuPont™ used in shaft and head production. It is known for its high energy absorbing characteristics, but is a lower modulus material and has limited compression properties.
Kick ...

KEVLAR - A synthetic aramid fiber developed and sold by DuPont that has
good energy absorption properties. Kevlar has low modulus and poor
compression properties.

See also: Kick, Iron, Shaft, Metal wood, Metal