Hybrid golf clubs are made with the same materials as regular golf clubs. It is the dimensions of the club that make it a hybrid.
Hybrids have shorter shafts than that of a wood with a similar loft angle, which makes hybrids easier to control and more accurate.
A hybrid has a head that is larger and heavier than the head of an iron, but it is still smaller than a head of a wood.
Because hybrid golf clubs have a lower center of gravity, the ball is easier to get in the air, so hybrids have more loft than irons with a similar angle on the club head.
Because hybrids combine characteristics of clubs designed for one purpose, they can be used in multiple situations.