What do the three different textures on the GRID roller simulate?

The three different textures on the GRID roller are designed to mimic the sensations associated with various types of soft tissues within the body, providing a unique experience that enhances the effectiveness of the roller for self-myofascial release. Each texture corresponds to different therapeutic purposes, allowing users to target muscle soreness and tension more effectively.

While options may point to specific body parts or professional techniques, they do not accurately reflect the primary function of the GRID roller's design. The ideal response focuses on how the distinct textures replicate the various stimuli one might encounter during a massage or therapy session, but option B closely addresses the broader notion of different areas of manual manipulation that can influence relaxation and muscle recovery through self-application.