A wig with layers of hair connected to its front, back, and sides is referred to as a deep wave wig. The layers are designed with several styling options in mind. This is why it is known as a deep wave wig. The pattern of the waves that develop on the head characterizes deep waves.

deep wave wig(https://mscoco-hair.blogspot.com/2023/02/how-should-deep-wave-wig-be-styled.html)