It typically consists of a durable, non-toxic, and non-allergenic material that is safe for chewing. The necklace block is designed to be worn around the neck and is intended to provide a discreet and socially acceptable way for individuals to satisfy their chewing needs.

It can help individuals focus, reduce anxiety, and increase concentration by providing a sensory outlet. The block is also useful for individuals who have oral sensory seeking behaviors, such as those with sensory processing disorders, autism, ADHD, or other special needs.